commit 9059304cb5c6f7f683ea30259eeacc5a429566c9
author jkarlin <jkarlin@chromium.org> Fri Apr 03 16:46:44 2015
committer Commit bot <commit-bot@chromium.org> Fri Apr 03 16:47:23 2015
tree d320b71723b483898a4d6e61d4ee8579e47af4d8
parent d4c3a502cc21b8e2f7d37b0508278f3445196f5d

[BackgroundSync] Handle storage failure

This CL introduces proper failure handling in case the storage backend fails.

Changes:

1. If the ServiceWorker is unregistered - Remove the sync registrations from memory
2. If the ServiceWorkerStorage is wiped - Reinit the BackgroundSyncManager
3. If reading or writing from ServiceWorkerStorage fails (SERVICE_WORKER_ERROR_FAILURE) - Delete everything and disable the BackgroundSyncManager until browser restart.

Added unittests for above cases. I had to change the unittest to register serviceworkers via the ServiceWorkerContext instead of directly in Storage so that the ServiceWorkerContextObserver receives updates.

BUG=449443

Review URL: https://codereview.chromium.org/1048053002

Cr-Commit-Position: refs/heads/master@{#323756}