Check for method.returns_promise around ExceptionState::throwIfNeeded

Check for method.returns_promise around ExceptionState::throwIfNeeded

This ensures that either an exception is thrown, or a promise is
rejected, never both.

BUG=628526
Committed: https://crrev.com/894f497bb8a3bf00a32a396abae1a6e91824867d
Cr-Commit-Position: refs/heads/master@{#405967}

[jgruber, 2016-07-15 11:20:24]

The CQ bit was checked by jgruber@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-07-15 11:20:35]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jgruber, 2016-07-15 13:00:09]

jgruber@chromium.org changed reviewers:
+ haraken@chromium.org

[commit-bot: I haz the power, 2016-07-15 13:09:36]

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

[commit-bot: I haz the power, 2016-07-15 13:09:36]

Dry run: This issue passed the CQ dry run.

[haraken, 2016-07-15 14:19:13]

LGTM

[jgruber, 2016-07-18 06:37:14]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2016-07-18 06:37:30]

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

[commit-bot: I haz the power, 2016-07-18 08:53:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-18 08:53:41]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-18 08:55:42]

Description was changed from

==========
Check for method.returns_promise around ExceptionState::throwIfNeeded

This ensures that either an exception is thrown, or a promise is
rejected, never both.

BUG=628526
==========

to

==========
Check for method.returns_promise around ExceptionState::throwIfNeeded

This ensures that either an exception is thrown, or a promise is
rejected, never both.

BUG=628526

Committed: https://crrev.com/894f497bb8a3bf00a32a396abae1a6e91824867d
Cr-Commit-Position: refs/heads/master@{#405967}
==========

[commit-bot: I haz the power, 2016-07-18 08:55:42]

Patchset 1 (id:??) landed as
https://crrev.com/894f497bb8a3bf00a32a396abae1a6e91824867d
Cr-Commit-Position: refs/heads/master@{#405967}