ServiceWorker, remove old Cache API implementation to make way for the polyfill.

ServiceWorker, remove old Cache API implementation to make way for the polyfill.

R=falken@chromium.org,jkarlin@chromium.org
BUG=374822
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=175596

[gavinp, 2014-06-05 15:15:13]

PTAL.

[jsbell, 2014-06-05 18:29:55]

lgtm

[gavinp, 2014-06-05 19:19:24]

The CQ bit was checked by gavinp@chromium.org

[commit-bot: I haz the power, 2014-06-05 19:20:23]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/gavinp@chromium.org/311233007/1

[commit-bot: I haz the power, 2014-06-05 20:54:05]

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/10833)
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[commit-bot: I haz the power, 2014-06-05 20:54:26]

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

[commit-bot: I haz the power, 2014-06-05 20:54:27]

Try jobs failed on following builders:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[jsbell, 2014-06-05 22:05:41]

The CQ bit was checked by jsbell@chromium.org

[commit-bot: I haz the power, 2014-06-05 22:06:15]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/gavinp@chromium.org/311233007/1

[commit-bot: I haz the power, 2014-06-05 23:05:58]

Change committed as 175596