Move HighResolutionTimeInWorkers to stable.

Move HighResolutionTimeInWorkers to stable.

This moves the "High Resolution Time Level 2" mini feature to stable,
extending high resolution timing support to also cover Web Workers,

 https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/HighResolutionTime2/Overview.html

Relevant "Intent to Ship" thread,

 https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/R3OiFdzqm1w

R=jochen@chromium.org
BUG=169318
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=166435

[sof, 2014-02-04 11:56:41]

When you next can, please take a look; cheers.

[jochen (gone - plz use gerrit), 2014-02-04 12:22:15]

lgtm

[sof, 2014-02-04 12:23:24]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-02-04 12:23:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sigbjornf@opera.com/153543004/1

[sof, 2014-02-04 16:19:53]

The CQ bit was unchecked by sigbjornf@opera.com

[skia-commit-bot, 2014-02-04 16:20:41]

CQ bit was unchecked on CL. Ignoring.

[sof, 2014-02-04 16:21:18]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-02-04 16:21:30]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sigbjornf@opera.com/153543004/1

[sof, 2014-02-04 20:44:10]

The CQ bit was unchecked by sigbjornf@opera.com

[sof, 2014-02-04 20:47:47]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-02-04 20:48:44]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sigbjornf@opera.com/153543004/1

[commit-bot: I haz the power, 2014-02-05 00:09:44]

Change committed as 166435