[DONT COMMIT] DevTools: Make WorkerThreadDebugger available for Worklets [1]

DevTools: Make WorkerThreadDebugger available for Worklets [1]

This is a preparation to change an interface of ThreadDebugger. See [2] for
details.

[1] Chromium: THIS PATCH
[2] V8: https://codereview.chromium.org/2451893005/
[3] Chromium: https://codereview.chromium.org/2456733002/

BUG=646559

[nhiroki, 2016-11-02 07:36:55]

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

[commit-bot: I haz the power, 2016-11-02 07:37:09]

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

[nhiroki, 2016-11-02 08:02:40]

Description was changed from

==========
DevTools: Make WorkerThreadDebugger available for Worklets [1]

[1] Chromium: THIS PATCH
[2] V8: https://codereview.chromium.org/2451893005/
[3] Chromium: https://codereview.chromium.org/2456733002/

BUG=646559
==========

to

==========
DevTools: Make WorkerThreadDebugger available for Worklets [1]

This is a preparation to change an interface of ThreadDebugger. See [3] for
details.

[1] Chromium: THIS PATCH
[2] V8: https://codereview.chromium.org/2451893005/
[3] Chromium: https://codereview.chromium.org/2456733002/

BUG=646559
==========

[nhiroki, 2016-11-02 08:19:08]

Description was changed from

==========
DevTools: Make WorkerThreadDebugger available for Worklets [1]

This is a preparation to change an interface of ThreadDebugger. See [3] for
details.

[1] Chromium: THIS PATCH
[2] V8: https://codereview.chromium.org/2451893005/
[3] Chromium: https://codereview.chromium.org/2456733002/

BUG=646559
==========

to

==========
DevTools: Make WorkerThreadDebugger available for Worklets [1]

This is a preparation to change an interface of ThreadDebugger. See [2] for
details.

[1] Chromium: THIS PATCH
[2] V8: https://codereview.chromium.org/2451893005/
[3] Chromium: https://codereview.chromium.org/2456733002/

BUG=646559
==========

[commit-bot: I haz the power, 2016-11-02 09:06:40]

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

[commit-bot: I haz the power, 2016-11-02 09:06:40]

Dry run: Try jobs failed on following builders:
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)