Roll chromium_revision df4d569..3e15d1a (362055:362064)

Change log: https://chromium.googlesource.com/chromium/src/+log/df4d569..3e15d1a
Full diff: https://chromium.googlesource.com/chromium/src/+/df4d569..3e15d1a

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/1483793002

Cr-Commit-Position: refs/heads/master@{#10837}
diff --git a/DEPS b/DEPS
index d115093..372e89c 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': 'df4d5693b0f482ff7eb1054224ef1df120190a5d',
+  'chromium_revision': '3e15d1a2576e534e3674936022b40bedcf6f04e9',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than