SWRegistration::unregister returns false when the registration is already unregistered. (3/3)

ServiceWorkerRegistration::unregister returns false when the registration is already unregistered. (3/3)

1. [Blink] https://codereview.chromium.org/549093002/
2. [Chromium] https://codereview.chromium.org/554573002/
3. [Blink] this patch

BUG=390894
TEST=run_webkit_tests.py http/tests/serviceworker/unregister.html

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181783

[shimazu, 2014-09-08 08:28:22]

shimazu@chromium.org changed reviewers:
+ horo@chromium.org

[horo, 2014-09-10 05:47:47]

lgtm

[shimazu, 2014-09-10 08:08:35]

The CQ bit was checked by shimazu@chromium.org

[commit-bot: I haz the power, 2014-09-10 08:09:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/shimazu@chromium.org/550093002/1

[commit-bot: I haz the power, 2014-09-10 09:05:37]

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

[commit-bot: I haz the power, 2014-09-10 09:05:38]

Try jobs failed on following builders:
  linux_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/2...)

[shimazu, 2014-09-11 00:07:31]

The CQ bit was checked by shimazu@chromium.org

[commit-bot: I haz the power, 2014-09-11 00:08:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/550093002/1

[commit-bot: I haz the power, 2014-09-11 02:40:51]

Committed patchset #1 (id:1) as 181783