Roll chromium_revision 40e5374088..dfa4a7a6be (754268:754373)

Change log: https://chromium.googlesource.com/chromium/src/+log/40e5374088..dfa4a7a6be
Full diff: https://chromium.googlesource.com/chromium/src/+/40e5374088..dfa4a7a6be

Changed dependencies
* src/base: https://chromium.googlesource.com/chromium/src/base/+log/af1d64aaa3..1406bf9780
* src/build: https://chromium.googlesource.com/chromium/src/build/+log/3258ed4d9d..bd900e158a
* src/ios: https://chromium.googlesource.com/chromium/src/ios/+log/f97785887d..7dbbc602e6
* src/testing: https://chromium.googlesource.com/chromium/src/testing/+log/9ec59d2f8f..b76eea2ef1
* src/third_party: https://chromium.googlesource.com/chromium/src/third_party/+log/e1e1b36a0b..26169164b0
* src/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/b73f8a96ec..6a7e234b58
* src/tools: https://chromium.googlesource.com/chromium/src/tools/+log/40d2066938..1d1d417751
DEPS diff: https://chromium.googlesource.com/chromium/src/+/40e5374088..dfa4a7a6be/DEPS

No update to Clang.

TBR=chromium-webrtc-autoroll@webrtc-ci.iam.gserviceaccount.com,
BUG=None

Change-Id: I5cd60a150822ca2e977656aec44ec5db68afabb5
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172240
Reviewed-by: 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/master@{#30934}
diff --git a/DEPS b/DEPS
index 39a0573..66d0935 100644
--- a/DEPS
+++ b/DEPS
@@ -8,16 +8,16 @@
   # chromium waterfalls. More info at: crbug.com/570091.
   'checkout_configuration': 'default',
   'checkout_instrumented_libraries': 'checkout_linux and checkout_configuration == "default"',
-  'chromium_revision': '40e5374088e12a0b2ed749a1e586a6e542bcb41b',
+  'chromium_revision': 'dfa4a7a6be2b3aed25e9b82f93a8be0c1de12a6e',
 }
 
 deps = {
   # 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@af1d64aaa38f692547d3f153ef425800969538d8',
+    'https://chromium.googlesource.com/chromium/src/base@1406bf9780d084d387c32d9010efabad30152a6c',
   'src/build':
-    'https://chromium.googlesource.com/chromium/src/build@3258ed4d9d755a3564d98bef8707bbdb5f8a7974',
+    'https://chromium.googlesource.com/chromium/src/build@bd900e158a3265353604739eb392db167cecbb8c',
   'src/buildtools':
     'https://chromium.googlesource.com/chromium/src/buildtools@7977eb176752aeec29d888cfe8e677ac12ed1c41',
   # Gradle 4.3-rc4. Used for testing Android Studio project generation for WebRTC.
@@ -26,13 +26,13 @@
     'condition': 'checkout_android',
   },
   'src/ios': {
-    'url': 'https://chromium.googlesource.com/chromium/src/ios@f97785887db22fa789974f35f358a5a19dba9c11',
+    'url': 'https://chromium.googlesource.com/chromium/src/ios@7dbbc602e625786e709fd24ff920b3b056fd9606',
     'condition': 'checkout_ios',
   },
   'src/testing':
-    'https://chromium.googlesource.com/chromium/src/testing@9ec59d2f8ff46a4af444954573854e205ca38f19',
+    'https://chromium.googlesource.com/chromium/src/testing@b76eea2ef137585e2acbb91801131c0cb34ba980',
   'src/third_party':
-    'https://chromium.googlesource.com/chromium/src/third_party@e1e1b36a0ba1a462dd157455ab1bc8c4c9be97c2',
+    'https://chromium.googlesource.com/chromium/src/third_party@26169164b0003249ab8f0ce8c0b586fe78b5b5ba',
 
   'src/buildtools/linux64': {
     'packages': [
@@ -130,7 +130,7 @@
   'src/third_party/colorama/src':
     'https://chromium.googlesource.com/external/colorama.git@799604a1041e9b3bc5d2789ecbd7e8db2e18e6b8',
   'src/third_party/depot_tools':
-    'https://chromium.googlesource.com/chromium/tools/depot_tools.git@b73f8a96ec6daa0a6cfe5dfdab1c7249761a4b7d',
+    'https://chromium.googlesource.com/chromium/tools/depot_tools.git@6a7e234b584eff3fbbd5686f5ec75cba3d25667c',
   'src/third_party/ffmpeg':
     'https://chromium.googlesource.com/chromium/third_party/ffmpeg.git@31886e8f39a47a9d7107d4c937bb053dcf5699ce',
   'src/third_party/findbugs': {
@@ -259,7 +259,7 @@
   'src/third_party/yasm/source/patched-yasm':
     'https://chromium.googlesource.com/chromium/deps/yasm/patched-yasm.git@720b70524a4424b15fc57e82263568c8ba0496ad',
   'src/tools':
-    'https://chromium.googlesource.com/chromium/src/tools@40d206693837d1184601b91570b5610ec628e4cc',
+    'https://chromium.googlesource.com/chromium/src/tools@1d1d417751576fc2e285156c0b2a99eaed6e4a37',
   'src/tools/swarming_client':
     'https://chromium.googlesource.com/infra/luci/client-py.git@cc958279ffd6853e0a1b227a7e957ca334fe56af',