ServiceWorker: CacheStorage.has() message routing fixes

ServiceWorker: CacheStorage.has() message routing fixes

More copy/pasta. Discovered via pending tests on the Blink side.

BUG=392621
TEST=http://crrev.com/430993002
R=jkarlin@chromium.org,gavinp@chromium.org,michaeln@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=291529

[jsbell, 2014-08-22 19:03:05]

michaeln@ - PTAL?

[michaeln1, 2014-08-22 20:15:29]

lgtm (ooops)

[jsbell, 2014-08-22 20:24:29]

The CQ bit was checked by jsbell@chromium.org

[commit-bot: I haz the power, 2014-08-22 20:25:21]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jsbell@chromium.org/495423002/1

[commit-bot: I haz the power, 2014-08-22 21:20:48]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)
  win_chromium_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[commit-bot: I haz the power, 2014-08-22 21:22:48]

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

[commit-bot: I haz the power, 2014-08-22 21:22:49]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[michaeln, 2014-08-22 21:35:56]

lgtm2

[michaeln, 2014-08-22 21:36:00]

The CQ bit was checked by michaeln@chromium.org

[commit-bot: I haz the power, 2014-08-22 21:36:38]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jsbell@chromium.org/495423002/1

[commit-bot: I haz the power, 2014-08-22 22:24:16]

Committed patchset #1 (1) as 291529