DevTools: Add workerShadowPageLoaded method to shared/service worker clients for further plumbing i…

DevTools: Add workerShadowPageLoaded method to shared/service worker clients for further plumbing into the browser.

This method is going to be used as a new signal for opening worker frontend when 'debug on start' option is enabled.

BUG=404355
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180480

[vsevik, 2014-08-18 16:04:46]

PTAL

[pfeldman, 2014-08-18 16:14:45]

lgtm

https://codereview.chromium.org/483813002/diff/1/public/web/WebServiceWorkerC...
File public/web/WebServiceWorkerContextClient.h (right):

https://codereview.chromium.org/483813002/diff/1/public/web/WebServiceWorkerC...
public/web/WebServiceWorkerContextClient.h:75: // start a worker thread.
Let add more details on why this is needed.

[vsevik, 2014-08-18 16:32:30]

The CQ bit was checked by vsevik@chromium.org

[commit-bot: I haz the power, 2014-08-18 16:33:19]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vsevik@chromium.org/483813002/20001

[commit-bot: I haz the power, 2014-08-18 17:40:33]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/23268)

[commit-bot: I haz the power, 2014-08-18 18:17:44]

Committed patchset #2 (20001) as 180480