Roll chromium_revision e2bf349..a469250 (358372:358505)

Change log: https://chromium.googlesource.com/chromium/src/+log/e2bf349..a469250
Full diff: https://chromium.googlesource.com/chromium/src/+/e2bf349..a469250

Changed dependencies:
* src/third_party/libyuv: https://chromium.googlesource.com/libyuv/libyuv.git/+log/c2bff1a..98eb102
* src/third_party/nss: https://chromium.googlesource.com/chromium/deps/nss.git/+log/aab0d08..a676aa0
DEPS diff: https://chromium.googlesource.com/chromium/src/+/e2bf349..a469250/DEPS

No update to Clang.

TBR=
CQ_EXTRA_TRYBOTS=tryserver.webrtc:win_baremetal,mac_baremetal,linux_baremetal

Review URL: https://codereview.webrtc.org/1418763004

Cr-Commit-Position: refs/heads/master@{#10550}
diff --git a/DEPS b/DEPS
index 7e2b3de..579ece2 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': 'e2bf349b84f10e940b5ebe5a8fcaf2cf8c8eb322',
+  'chromium_revision': 'a469250cba6a8535d64b0c96c83346770037e221',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than