Roll chromium_revision dca359146d..8a4d51ecec (384874:384952)

Change log: https://chromium.googlesource.com/chromium/src/+log/dca359146d..8a4d51ecec
Full diff: https://chromium.googlesource.com/chromium/src/+/dca359146d..8a4d51ecec

No dependencies changed.
No update to Clang.

TBR=

Review URL: https://codereview.webrtc.org/1860573003

Cr-Commit-Position: refs/heads/master@{#12223}
diff --git a/DEPS b/DEPS
index 5867846..8556a4c 100644
--- a/DEPS
+++ b/DEPS
@@ -6,7 +6,7 @@
 vars = {
   'extra_gyp_flag': '-Dextra_gyp_flag=0',
   'chromium_git': 'https://chromium.googlesource.com',
-  'chromium_revision': 'dca359146de5ca000b3e6681b91a468435b4f4b7',
+  'chromium_revision': '8a4d51ecec0253b09307267f13d98f462c6cf73b',
 }
 
 # NOTE: Use http rather than https; the latter can cause problems for users