Roll chromium_revision 4771dd5..3b7968d (359351:359482)

Roll chromium_revision 4771dd5..3b7968d (359351:359482)

Change log: https://chromium.googlesource.com/chromium/src/+log/4771dd5..3b7968d
Full diff: https://chromium.googlesource.com/chromium/src/+/4771dd5..3b7968d

Changed dependencies:
* src/buildtools: https://chromium.googlesource.com/chromium/buildtools.git/+log/4a95614..3ba3ca2
* src/third_party/libvpx_new/source/libvpx: https://chromium.googlesource.com/webm/libvpx.git/+log/9ecb99a..0941ff7
DEPS diff: https://chromium.googlesource.com/chromium/src/+/4771dd5..3b7968d/DEPS

No update to Clang.

TBR=marpan@webrtc.org, stefan@webrtc.org,
CQ_EXTRA_TRYBOTS=tryserver.webrtc:win_baremetal,mac_baremetal,linux_baremetal

Committed: https://crrev.com/69191ed845f3e1d4ec1671cb4558ea7483f97168
Cr-Commit-Position: refs/heads/master@{#10629}

[kjellander_webrtc, 2015-11-13 03:02:51]

The CQ bit was checked by kjellander@webrtc.org

[commit-bot: I haz the power, 2015-11-13 03:02:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1442883002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1442883002/1

[commit-bot: I haz the power, 2015-11-13 03:57:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-13 03:57:14]

Patchset 1 (id:??) landed as
https://crrev.com/69191ed845f3e1d4ec1671cb4558ea7483f97168
Cr-Commit-Position: refs/heads/master@{#10629}