Remove the Promises old implementation.

Remove the Promises old implementation.

As V8 Promises are enabled, the old Promises implementation can be deleted.
This CL also adds some unittests for ScriptPromise and ScriptPromiseResolver.

BUG=352552, 352597
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=174632

[jochen (gone - plz use gerrit), 2014-05-22 08:25:02]

lgtm++

[haraken, 2014-05-22 08:26:59]

LGTM2, it's great V8PromiseCustom is gone (I was just trying to refactor it) :)

[yhirano, 2014-05-22 08:35:07]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2014-05-22 08:35:29]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/yhirano@chromium.org/293933002/20001

[commit-bot: I haz the power, 2014-05-22 14:36:24]

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:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[commit-bot: I haz the power, 2014-05-22 14:37:26]

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

[commit-bot: I haz the power, 2014-05-22 14:37:27]

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

[yhirano, 2014-05-22 14:37:49]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2014-05-22 14:38:27]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/yhirano@chromium.org/293933002/20001

[commit-bot: I haz the power, 2014-05-22 16:31:15]

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:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[commit-bot: I haz the power, 2014-05-22 16:32:24]

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

[commit-bot: I haz the power, 2014-05-22 16:32:25]

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

[yhirano, 2014-05-23 01:53:29]

The CQ bit was checked by yhirano@chromium.org

[commit-bot: I haz the power, 2014-05-23 01:54:24]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/yhirano@chromium.org/293933002/20001

[commit-bot: I haz the power, 2014-05-23 01:55:13]

Change committed as 174632