Roll chromium_revision b8d842d9a8..2b7d0fcd02 (465485:465517)

Roll chromium_revision b8d842d9a8..2b7d0fcd02 (465485:465517)

Change log: https://chromium.googlesource.com/chromium/src/+log/b8d842d9a8..2b7d0fcd02
Full diff: https://chromium.googlesource.com/chromium/src/+/b8d842d9a8..2b7d0fcd02

Changed dependencies:
* src/base: https://chromium.googlesource.com/chromium/src/base/+log/34dda3c401..a26495334f
* src/ios: https://chromium.googlesource.com/chromium/src/ios/+log/11ebca4c8b..b8d69adb60
* src/third_party: https://chromium.googlesource.com/chromium/src/third_party/+log/d137201b0e..b34002f691
* src/tools: https://chromium.googlesource.com/chromium/src/tools/+log/3bdf19296c..732a74031f
DEPS diff: https://chromium.googlesource.com/chromium/src/+/b8d842d9a8..2b7d0fcd02/DEPS

No update to Clang.

TBR=
BUG=None

[buildbot, 2017-04-19 07:27:42]

The CQ bit was checked by buildbot@webrtc.org

[commit-bot: I haz the power, 2017-04-19 07:27:49]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-04-19 07:46:44]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-04-19 07:46:45]

Try jobs failed on following builders:
  linux_msan on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/linux_msan/builds/19765)