Make inspector-protocol/debugger/debugger-step-into-dedicated-worker.html not timeout

Make inspector-protocol/debugger/debugger-step-into-dedicated-worker.html not timeout

The test was timing out because sometimes Debugger.enable and Runtime.run command were dispatched before worker context initialization completed. Runtime.run was executed before WorkerInspectorController::pauseOnStart was called from WorkerThread and we kept waiting forever for Runtime.run which has already been dispatched.

BUG=496805
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=196786

[yurys, 2015-06-09 15:32:17]

yurys@chromium.org changed reviewers:
+ pfeldman@chromium.org, sergeyv@chromium.org

[yurys, 2015-06-09 15:34:28]

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

[yurys, 2015-06-09 15:34:58]

yurys@chromium.org changed reviewers:
+ kozyatinskiy@chromium.org

[commit-bot: I haz the power, 2015-06-09 15:35:00]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1164423007/1

[pfeldman, 2015-06-09 15:45:15]

lgtm

[pfeldman, 2015-06-09 15:45:24]

The CQ bit was unchecked by pfeldman@chromium.org

[pfeldman, 2015-06-09 15:45:24]

The CQ bit was checked by pfeldman@chromium.org

[commit-bot: I haz the power, 2015-06-09 15:46:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1164423007/1

[commit-bot: I haz the power, 2015-06-09 17:32:38]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=196786