Roll chromium_revision e658ee0..4771dd5 (359300:359351)

Change log: https://chromium.googlesource.com/chromium/src/+log/e658ee0..4771dd5
Full diff: https://chromium.googlesource.com/chromium/src/+/e658ee0..4771dd5

No dependencies changed.
No update to Clang.

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

Review URL: https://codereview.webrtc.org/1438993004

Cr-Commit-Position: refs/heads/master@{#10627}
diff --git a/DEPS b/DEPS
index 137a479..36258e0 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': 'e658ee09f499f70c2bbb5589acaf4b35f6bd13d9',
+  'chromium_revision': '4771dd55cdc2ca26c955776056d540ec62da40e6',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than