Fixed toV8 with empty context in InspectorFrontendClientImpl::windowObjectCleared

Fixed toV8 with empty context in InspectorFrontendClientImpl::windowObjectCleared

BUG=369451
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=175253

[tasak, 2014-05-29 10:31:28]

Would you review this CL?

[haraken, 2014-05-29 10:31:59]

LGTM

[dgozman, 2014-05-29 11:05:29]

lgtm

[tasak, 2014-05-30 03:46:18]

The CQ bit was checked by tasak@google.com

[commit-bot: I haz the power, 2014-05-30 03:48:37]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tasak@google.com/301113002/1

[commit-bot: I haz the power, 2014-05-30 09:45:42]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  blink_presubmit on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/6509)

[commit-bot: I haz the power, 2014-05-30 12:38:56]

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

[commit-bot: I haz the power, 2014-05-30 12:38:56]

Try jobs failed on following builders:
  blink_presubmit on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/6516)

[tasak, 2014-06-02 04:15:58]

+tkent

Would you review Source/web code?
I need Source/web OWNER's lgtm.

[tkent, 2014-06-02 04:16:47]

rslgtm

[tkent, 2014-06-02 04:16:51]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2014-06-02 04:17:07]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tasak@google.com/301113002/1

[commit-bot: I haz the power, 2014-06-02 04:32:54]

Change committed as 175253