Roll chromium_revision fcc50d8cd1..4ad0798dfd (973924:974045)

Change log: https://chromium.googlesource.com/chromium/src/+log/fcc50d8cd1..4ad0798dfd
Full diff: https://chromium.googlesource.com/chromium/src/+/fcc50d8cd1..4ad0798dfd

Changed dependencies
* src/base: https://chromium.googlesource.com/chromium/src/base/+log/b3563c3762..d9e6daa144
* src/build: https://chromium.googlesource.com/chromium/src/build/+log/cd91260149..51ff1c607b
* src/ios: https://chromium.googlesource.com/chromium/src/ios/+log/d95306e336..329b18ceb3
* src/testing: https://chromium.googlesource.com/chromium/src/testing/+log/da335163eb..064ccfc12b
* src/third_party: https://chromium.googlesource.com/chromium/src/third_party/+log/c033af7edf..3c02c2fa5e
* src/third_party/catapult: https://chromium.googlesource.com/catapult.git/+log/5242864bdf..4ac0eac51b
* src/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/42cf2acbae..64f5f26f1a
* src/tools: https://chromium.googlesource.com/chromium/src/tools/+log/b86885e473..5561a9ea21
DEPS diff: https://chromium.googlesource.com/chromium/src/+/fcc50d8cd1..4ad0798dfd/DEPS

No update to Clang.

BUG=None

Change-Id: Iadfac3bcd49faf58940275280ecfbacfadbbd347
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/252200
Bot-Commit: Autoroller <chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com>
Commit-Queue: Autoroller <chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#36054}
diff --git a/DEPS b/DEPS
index 048cc03..1b25ae0 100644
--- a/DEPS
+++ b/DEPS
@@ -10,7 +10,7 @@
   # chromium waterfalls. More info at: crbug.com/570091.
   'checkout_configuration': 'default',
   'checkout_instrumented_libraries': 'checkout_linux and checkout_configuration == "default"',
-  'chromium_revision': 'fcc50d8cd150681f0ee7020f38c14963f463c1ee',
+  'chromium_revision': '4ad0798dfd0f4955f3d92569e1d25dbe13d268b0',
 
   # Keep the Chromium default of generating location tags.
   'generate_location_tags': True,
@@ -23,9 +23,9 @@
   # TODO(kjellander): Move this to be Android-only once the libevent dependency
   # in base/third_party/libevent is solved.
   'src/base':
-    'https://chromium.googlesource.com/chromium/src/base@b3563c37627a3ffff99980d7f2732d134b0ad105',
+    'https://chromium.googlesource.com/chromium/src/base@d9e6daa144c992480b6155143cbc9cbb3d814068',
   'src/build':
-    'https://chromium.googlesource.com/chromium/src/build@cd91260149d06af08481668f49dd7ca6753f6a5e',
+    'https://chromium.googlesource.com/chromium/src/build@51ff1c607b9e3e9a4a6d0fc74dbd1ed46dfdd340',
   'src/buildtools':
     'https://chromium.googlesource.com/chromium/src/buildtools@93c15529c323c6cc12516ef9caac7fd815ee7c82',
   # Gradle 6.6.1. Used for testing Android Studio project generation for WebRTC.
@@ -34,13 +34,13 @@
     'condition': 'checkout_android',
   },
   'src/ios': {
-    'url': 'https://chromium.googlesource.com/chromium/src/ios@d95306e336e2033b65128188f59f68eb75df71d7',
+    'url': 'https://chromium.googlesource.com/chromium/src/ios@329b18ceb3f49dbfee2640e7f5c0adb219015913',
     'condition': 'checkout_ios',
   },
   'src/testing':
-    'https://chromium.googlesource.com/chromium/src/testing@da335163ebeceac8d4b792c9fecb5b82fc30aa15',
+    'https://chromium.googlesource.com/chromium/src/testing@064ccfc12b479a061562809a3760c9b38be5fbf2',
   'src/third_party':
-    'https://chromium.googlesource.com/chromium/src/third_party@c033af7edf96727b5b9a790b7ce46d2aa598f2e0',
+    'https://chromium.googlesource.com/chromium/src/third_party@3c02c2fa5ed10b0e876ca3f1b5316e41f94d04c0',
 
   'src/buildtools/linux64': {
     'packages': [
@@ -140,7 +140,7 @@
   'src/third_party/breakpad/breakpad':
     'https://chromium.googlesource.com/breakpad/breakpad.git@08bd844599bf04c71707e8f59a8013a941264695',
   'src/third_party/catapult':
-    'https://chromium.googlesource.com/catapult.git@5242864bdf5c33c046ad795adfa9e60096e0cf11',
+    'https://chromium.googlesource.com/catapult.git@4ac0eac51b57114d5a50793dee6ffbda9859850f',
   'src/third_party/ced/src': {
     'url': 'https://chromium.googlesource.com/external/github.com/google/compact_enc_det.git@ba412eaaacd3186085babcd901679a48863c7dd5',
   },
@@ -149,7 +149,7 @@
   'src/third_party/crc32c/src':
     'https://chromium.googlesource.com/external/github.com/google/crc32c.git@fa5ade41ee480003d9c5af6f43567ba22e4e17e6',
   'src/third_party/depot_tools':
-    'https://chromium.googlesource.com/chromium/tools/depot_tools.git@42cf2acbaee8f149fdc08661eece63aaf271b4bc',
+    'https://chromium.googlesource.com/chromium/tools/depot_tools.git@64f5f26f1a0c8b8333514cdb861847f02d405f36',
   'src/third_party/ffmpeg':
     'https://chromium.googlesource.com/chromium/third_party/ffmpeg.git@574c39cce3231c69bc9a02ac475c27d944bdb113',
   'src/third_party/findbugs': {
@@ -285,7 +285,7 @@
     'condition': 'checkout_win',
   },
   'src/tools':
-    'https://chromium.googlesource.com/chromium/src/tools@b86885e4731e26eccc70cf53bd595a1730f46a32',
+    'https://chromium.googlesource.com/chromium/src/tools@5561a9ea2105d3aad491ed2736b78bf8eaa26214',
 
   'src/third_party/accessibility_test_framework': {
       'packages': [