Update V8 to version 3.27.4 (based on bleeding_edge revision r21317).

Update V8 to version 3.27.4 (based on bleeding_edge revision r21317).

Please reply to the V8 sheriff danno@chromium.org in case of problems.

TBR=danno@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=270987

[Michael Achenbach, 2014-05-15 11:58:59]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2014-05-15 11:59:44]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/machenbach@chromium.org/288193003/1

[commit-bot: I haz the power, 2014-05-15 13:56:53]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  ios_rel_device_ninja on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/ios_rel_device_ninja/...)

[commit-bot: I haz the power, 2014-05-15 13:59:31]

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

[commit-bot: I haz the power, 2014-05-15 13:59:32]

Try jobs failed on following builders:
  ios_rel_device_ninja on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/ios_rel_device_ninja/...)

[Michael Achenbach, 2014-05-15 14:02:41]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2014-05-15 14:03:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/machenbach@chromium.org/288193003/1

[Michael Achenbach, 2014-05-15 14:30:43]

The CQ bit was unchecked by machenbach@chromium.org

[Michael Achenbach, 2014-05-15 14:31:36]

Not committing this until the telemetry perf unittest problem is resolved:
https://code.google.com/p/chromium/issues/detail?id=373385

[Michael Achenbach, 2014-05-16 09:26:13]

Checking that this repros again
http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...
after https://code.google.com/p/chromium/issues/detail?id=373781 has been fixed.

[Michael Achenbach, 2014-05-16 11:22:47]

https://codereview.chromium.org/289033006/ fixes the telemetry perf unittests.

[Michael Achenbach, 2014-05-16 11:23:03]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2014-05-16 11:23:12]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/machenbach@chromium.org/288193003/1

[commit-bot: I haz the power, 2014-05-16 11:23:48]

Change committed as 270987

[Michael Achenbach, 2014-05-16 11:40:36]

FYI: The last linux_chromium_rel try job was manually triggered and pulled a too
old cr revision 270654 that doesn't contain the fix from 270986.