Fix ios bot no capacity error

Change-Id: I5627d39e005135aa87de4d6d90b272f2303fc8e7
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/486520
Auto-Submit: Jeremy Leconte <jleconte@google.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Jeremy Leconte <jleconte@google.com>
Cr-Commit-Position: refs/heads/main@{#48107}
diff --git a/infra/specs/client.webrtc.json b/infra/specs/client.webrtc.json
index 11c323c..da4d9cc 100644
--- a/infra/specs/client.webrtc.json
+++ b/infra/specs/client.webrtc.json
@@ -6399,7 +6399,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_decoder_unittests",
@@ -6418,7 +6418,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_engine_tests",
@@ -6437,7 +6437,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "call_tests",
@@ -6456,7 +6456,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_audio_unittests",
@@ -6475,7 +6475,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_video_unittests",
@@ -6494,7 +6494,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "dcsctp_unittests",
@@ -6513,7 +6513,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -6533,7 +6533,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -6553,7 +6553,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -6573,7 +6573,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "resource_adaptation_tests",
@@ -6592,7 +6592,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_media_unittests",
@@ -6611,7 +6611,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_p2p_unittests",
@@ -6630,7 +6630,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_pc_unittests",
@@ -6649,7 +6649,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_stats_unittests",
@@ -6668,7 +6668,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -6688,7 +6688,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rust_tests",
@@ -6707,7 +6707,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "slow_peer_connection_unittests",
@@ -6726,7 +6726,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -6746,7 +6746,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "system_wrappers_unittests",
@@ -6765,7 +6765,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -6785,7 +6785,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "tools_unittests",
@@ -6804,7 +6804,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_adaptation_tests",
@@ -6823,7 +6823,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_tests",
@@ -6842,7 +6842,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_timing_tests",
@@ -6861,7 +6861,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "voip_unittests",
@@ -6880,7 +6880,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_nonparallel_tests",
@@ -6899,7 +6899,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "xvfb_capture_tests",
@@ -6922,7 +6922,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_decoder_unittests",
@@ -6941,7 +6941,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_engine_tests",
@@ -6960,7 +6960,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "call_tests",
@@ -6979,7 +6979,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_audio_unittests",
@@ -6998,7 +6998,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_video_unittests",
@@ -7017,7 +7017,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "dcsctp_unittests",
@@ -7036,7 +7036,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -7056,7 +7056,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -7076,7 +7076,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -7096,7 +7096,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "resource_adaptation_tests",
@@ -7115,7 +7115,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_media_unittests",
@@ -7134,7 +7134,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_p2p_unittests",
@@ -7153,7 +7153,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_pc_unittests",
@@ -7172,7 +7172,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_stats_unittests",
@@ -7191,7 +7191,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -7211,7 +7211,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rust_tests",
@@ -7230,7 +7230,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "slow_peer_connection_unittests",
@@ -7249,7 +7249,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -7269,7 +7269,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "system_wrappers_unittests",
@@ -7288,7 +7288,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -7308,7 +7308,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "tools_unittests",
@@ -7327,7 +7327,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_adaptation_tests",
@@ -7346,7 +7346,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_tests",
@@ -7365,7 +7365,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_timing_tests",
@@ -7384,7 +7384,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "voip_unittests",
@@ -7403,7 +7403,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_nonparallel_tests",
@@ -7422,7 +7422,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "xvfb_capture_tests",
@@ -7444,7 +7444,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_decoder_unittests",
@@ -7462,7 +7462,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_engine_tests",
@@ -7480,7 +7480,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "call_tests",
@@ -7498,7 +7498,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_audio_unittests",
@@ -7516,7 +7516,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_video_unittests",
@@ -7534,7 +7534,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "dcsctp_unittests",
@@ -7552,7 +7552,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -7571,7 +7571,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -7590,7 +7590,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -7609,7 +7609,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "resource_adaptation_tests",
@@ -7627,7 +7627,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_media_unittests",
@@ -7645,7 +7645,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_p2p_unittests",
@@ -7663,7 +7663,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_pc_unittests",
@@ -7681,7 +7681,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_stats_unittests",
@@ -7699,7 +7699,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -7718,7 +7718,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rust_tests",
@@ -7736,7 +7736,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "slow_peer_connection_unittests",
@@ -7754,7 +7754,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -7773,7 +7773,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "system_wrappers_unittests",
@@ -7791,7 +7791,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -7810,7 +7810,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "tools_unittests",
@@ -7828,7 +7828,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_adaptation_tests",
@@ -7846,7 +7846,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_tests",
@@ -7864,7 +7864,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_timing_tests",
@@ -7882,7 +7882,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "voip_unittests",
@@ -7900,7 +7900,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_nonparallel_tests",
@@ -7918,7 +7918,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "xvfb_capture_tests",
@@ -11252,7 +11252,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -11303,7 +11302,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -12044,7 +12042,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -12095,7 +12092,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
diff --git a/infra/specs/mixins.pyl b/infra/specs/mixins.pyl
index 8a2abfb..1f70d91 100644
--- a/infra/specs/mixins.pyl
+++ b/infra/specs/mixins.pyl
@@ -92,14 +92,6 @@
       }
     }
   },
-  'mac_15_x64': {
-    'swarming': {
-      'dimensions': {
-        'cpu': 'x86-64',
-        'os': 'Mac-15'
-      }
-    }
-  },
   'mac_26_arm64': {
     'swarming': {
       'dimensions': {
@@ -108,6 +100,14 @@
       }
     }
   },
+  'mac_26_x64': {
+    'swarming': {
+      'dimensions': {
+        'cpu': 'x86-64',
+        'os': 'Mac-26'
+      }
+    }
+  },
   'mac_toolchain': {
     'swarming': {
       'cipd_packages': [{
diff --git a/infra/specs/mixins_webrtc.pyl b/infra/specs/mixins_webrtc.pyl
index 1cdc099..733c3a6 100644
--- a/infra/specs/mixins_webrtc.pyl
+++ b/infra/specs/mixins_webrtc.pyl
@@ -76,14 +76,6 @@
       }
     }
   },
-  'mac_15_x64': {
-    'swarming': {
-      'dimensions': {
-        'cpu': 'x86-64',
-        'os': 'Mac-15'
-      }
-    }
-  },
   'mac_26_arm64': {
     'swarming': {
       'dimensions': {
@@ -92,6 +84,14 @@
       }
     }
   },
+  'mac_26_x64': {
+    'swarming': {
+      'dimensions': {
+        'cpu': 'x86-64',
+        'os': 'Mac-26'
+      }
+    }
+  },
   'panther_on_14': {
     'swarming': {
       'dimensions': {
diff --git a/infra/specs/test_suites.pyl b/infra/specs/test_suites.pyl
index c3458bf..564ba54 100644
--- a/infra/specs/test_suites.pyl
+++ b/infra/specs/test_suites.pyl
@@ -175,7 +175,7 @@
         'mixins': ['shards-2'],
       },
       'modules_unittests': {
-        'mixins': ['shards-6', 'cores-12'],
+        'mixins': ['shards-6'],
       },
       'resource_adaptation_tests': {},
       'rtc_media_unittests': {},
@@ -193,7 +193,7 @@
         'mixins': ['xcodebuild_sim_runner']
       },
       'svc_tests': {
-        'mixins': ['shards-8', 'cores-12'],
+        'mixins': ['shards-8'],
       },
       'system_wrappers_unittests': {},
       'test_support_unittests': {},
diff --git a/infra/specs/tryserver.webrtc.json b/infra/specs/tryserver.webrtc.json
index a51e4a8..7a708a0 100644
--- a/infra/specs/tryserver.webrtc.json
+++ b/infra/specs/tryserver.webrtc.json
@@ -2693,7 +2693,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -2744,7 +2743,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -3485,7 +3483,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -3536,7 +3533,6 @@
             }
           ],
           "dimensions": {
-            "cores": "12",
             "cpu": "arm64",
             "os": "Mac-26"
           },
@@ -9621,7 +9617,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_decoder_unittests",
@@ -9640,7 +9636,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_engine_tests",
@@ -9659,7 +9655,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "call_tests",
@@ -9678,7 +9674,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_audio_unittests",
@@ -9697,7 +9693,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_video_unittests",
@@ -9716,7 +9712,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "dcsctp_unittests",
@@ -9735,7 +9731,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -9755,7 +9751,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -9775,7 +9771,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -9795,7 +9791,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "resource_adaptation_tests",
@@ -9814,7 +9810,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_media_unittests",
@@ -9833,7 +9829,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_p2p_unittests",
@@ -9852,7 +9848,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_pc_unittests",
@@ -9871,7 +9867,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_stats_unittests",
@@ -9890,7 +9886,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -9910,7 +9906,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rust_tests",
@@ -9929,7 +9925,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "slow_peer_connection_unittests",
@@ -9948,7 +9944,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -9968,7 +9964,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "system_wrappers_unittests",
@@ -9987,7 +9983,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -10007,7 +10003,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "tools_unittests",
@@ -10026,7 +10022,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_adaptation_tests",
@@ -10045,7 +10041,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_tests",
@@ -10064,7 +10060,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_timing_tests",
@@ -10083,7 +10079,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "voip_unittests",
@@ -10102,7 +10098,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_nonparallel_tests",
@@ -10121,7 +10117,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "xvfb_capture_tests",
@@ -10146,7 +10142,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_decoder_unittests",
@@ -10165,7 +10161,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_engine_tests",
@@ -10184,7 +10180,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "call_tests",
@@ -10203,7 +10199,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_audio_unittests",
@@ -10222,7 +10218,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_video_unittests",
@@ -10241,7 +10237,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "dcsctp_unittests",
@@ -10260,7 +10256,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -10280,7 +10276,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -10300,7 +10296,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -10320,7 +10316,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "resource_adaptation_tests",
@@ -10339,7 +10335,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_media_unittests",
@@ -10358,7 +10354,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_p2p_unittests",
@@ -10377,7 +10373,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_pc_unittests",
@@ -10396,7 +10392,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_stats_unittests",
@@ -10415,7 +10411,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -10435,7 +10431,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rust_tests",
@@ -10454,7 +10450,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "slow_peer_connection_unittests",
@@ -10473,7 +10469,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -10493,7 +10489,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "system_wrappers_unittests",
@@ -10512,7 +10508,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -10532,7 +10528,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "tools_unittests",
@@ -10551,7 +10547,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_adaptation_tests",
@@ -10570,7 +10566,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_tests",
@@ -10589,7 +10585,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_timing_tests",
@@ -10608,7 +10604,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "voip_unittests",
@@ -10627,7 +10623,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_nonparallel_tests",
@@ -10646,7 +10642,7 @@
           "dimensions": {
             "cores": "12",
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "xvfb_capture_tests",
@@ -11164,7 +11160,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_decoder_unittests",
@@ -11182,7 +11178,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "audio_engine_tests",
@@ -11200,7 +11196,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "call_tests",
@@ -11218,7 +11214,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_audio_unittests",
@@ -11236,7 +11232,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "common_video_unittests",
@@ -11254,7 +11250,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "dcsctp_unittests",
@@ -11272,7 +11268,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -11291,7 +11287,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -11310,7 +11306,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -11329,7 +11325,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "resource_adaptation_tests",
@@ -11347,7 +11343,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_media_unittests",
@@ -11365,7 +11361,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_p2p_unittests",
@@ -11383,7 +11379,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_pc_unittests",
@@ -11401,7 +11397,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rtc_stats_unittests",
@@ -11419,7 +11415,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 6
         },
@@ -11438,7 +11434,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "rust_tests",
@@ -11456,7 +11452,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "slow_peer_connection_unittests",
@@ -11474,7 +11470,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 4
         },
@@ -11493,7 +11489,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "system_wrappers_unittests",
@@ -11511,7 +11507,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           },
           "shards": 2
         },
@@ -11530,7 +11526,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "tools_unittests",
@@ -11548,7 +11544,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_adaptation_tests",
@@ -11572,7 +11568,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_codec_perf_tests",
@@ -11590,7 +11586,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_tests",
@@ -11608,7 +11604,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "video_timing_tests",
@@ -11626,7 +11622,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "voip_unittests",
@@ -11644,7 +11640,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_nonparallel_tests",
@@ -11668,7 +11664,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "webrtc_perf_tests",
@@ -11686,7 +11682,7 @@
         "swarming": {
           "dimensions": {
             "cpu": "x86-64",
-            "os": "Mac-15"
+            "os": "Mac-26"
           }
         },
         "test": "xvfb_capture_tests",
diff --git a/infra/specs/waterfalls.pyl b/infra/specs/waterfalls.pyl
index 8d421e9..78834eb 100644
--- a/infra/specs/waterfalls.pyl
+++ b/infra/specs/waterfalls.pyl
@@ -135,21 +135,21 @@
       'Linux64 Release (Libfuzzer)': {},
       'Mac Asan': {
         'os_type': 'mac',
-        'mixins': ['mac_15_x64', 'cores-12', 'resultdb-json-format'],
+        'mixins': ['mac_26_x64', 'cores-12', 'resultdb-json-format'],
         'test_suites': {
           'isolated_scripts': 'desktop_tests',
         },
       },
       'Mac64 Debug': {
         'os_type': 'mac',
-        'mixins': ['mac_15_x64', 'cores-12', 'resultdb-json-format'],
+        'mixins': ['mac_26_x64', 'cores-12', 'resultdb-json-format'],
         'test_suites': {
           'isolated_scripts': 'desktop_tests',
         },
       },
       'Mac64 Release': {
         'os_type': 'mac',
-        'mixins': ['mac_15_x64', 'resultdb-json-format'],
+        'mixins': ['mac_26_x64', 'resultdb-json-format'],
         'test_suites': {
           'isolated_scripts': 'desktop_tests',
         },
@@ -431,7 +431,7 @@
       },
       'mac_asan': {
         'os_type': 'mac',
-        'mixins': ['mac_15_x64', 'resultdb-json-format', 'cores-12'],
+        'mixins': ['mac_26_x64', 'resultdb-json-format', 'cores-12'],
         'test_suites': {
           'isolated_scripts': 'desktop_tests',
         },
@@ -440,7 +440,7 @@
       'mac_compile_rel': {},
       'mac_dbg': {
         'os_type': 'mac',
-        'mixins': ['mac_15_x64', 'resultdb-json-format', 'cores-12'],
+        'mixins': ['mac_26_x64', 'resultdb-json-format', 'cores-12'],
         'test_suites': {
           'isolated_scripts': 'desktop_tests',
         },
@@ -454,7 +454,7 @@
       },
       'mac_rel': {
         'os_type': 'mac',
-        'mixins': ['mac_15_x64', 'resultdb-json-format'],
+        'mixins': ['mac_26_x64', 'resultdb-json-format'],
         'test_suites': {
           'isolated_scripts': 'desktop_tests_tryserver',
         },