Roll chromium_revision 5749e43632..4ae118108a (839925:840025)

Change log: https://chromium.googlesource.com/chromium/src/+log/5749e43632..4ae118108a
Full diff: https://chromium.googlesource.com/chromium/src/+/5749e43632..4ae118108a

Changed dependencies
* src/build: https://chromium.googlesource.com/chromium/src/build/+log/4e13e3f7dd..0673173e07
* src/ios: https://chromium.googlesource.com/chromium/src/ios/+log/38ad57ca98..78513e47ca
* src/testing: https://chromium.googlesource.com/chromium/src/testing/+log/84cd1053bd..2f17932ea4
* src/third_party: https://chromium.googlesource.com/chromium/src/third_party/+log/2b8b7270a3..2f7c00931b
DEPS diff: https://chromium.googlesource.com/chromium/src/+/5749e43632..4ae118108a/DEPS

No update to Clang.

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

Change-Id: I8331b7003c8a07d824eb4e72f082a3682f4e6d62
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/200542
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@{#32902}
diff --git a/DEPS b/DEPS
index 979a2f8..bd0e6c4 100644
--- a/DEPS
+++ b/DEPS
@@ -7,7 +7,7 @@
   # chromium waterfalls. More info at: crbug.com/570091.
   'checkout_configuration': 'default',
   'checkout_instrumented_libraries': 'checkout_linux and checkout_configuration == "default"',
-  'chromium_revision': '5749e4363281711184f43b16fc02b04852f4fe74',
+  'chromium_revision': '4ae118108ad42632ad5d794effa90b6a38564822',
 }
 
 deps = {
@@ -16,7 +16,7 @@
   'src/base':
     'https://chromium.googlesource.com/chromium/src/base@bbb32a2f1187719595f3b57dc7bd8b66a599b01f',
   'src/build':
-    'https://chromium.googlesource.com/chromium/src/build@4e13e3f7dd3689818d4662e9c853fa75df77f92a',
+    'https://chromium.googlesource.com/chromium/src/build@0673173e074b114642332765d2857ba9b988d3cd',
   'src/buildtools':
     'https://chromium.googlesource.com/chromium/src/buildtools@2277272f7a7978c48f1b2c50d41af83485552235',
   # Gradle 6.6.1. Used for testing Android Studio project generation for WebRTC.
@@ -25,13 +25,13 @@
     'condition': 'checkout_android',
   },
   'src/ios': {
-    'url': 'https://chromium.googlesource.com/chromium/src/ios@38ad57ca98edd34ea296472a834298c4f836b36e',
+    'url': 'https://chromium.googlesource.com/chromium/src/ios@78513e47cacbca950e2223ff93c1c4e5918fdbe5',
     'condition': 'checkout_ios',
   },
   'src/testing':
-    'https://chromium.googlesource.com/chromium/src/testing@84cd1053bd0056d95d87b5169e7b136854ba740e',
+    'https://chromium.googlesource.com/chromium/src/testing@2f17932ea4427660115121b48024dcab7b93c339',
   'src/third_party':
-    'https://chromium.googlesource.com/chromium/src/third_party@2b8b7270a3c316801b5ebbf4a9b6adea65e2c55a',
+    'https://chromium.googlesource.com/chromium/src/third_party@2f7c00931b80c6d92e379254e5944fcccc9bd04e',
 
   'src/buildtools/linux64': {
     'packages': [