Revert of [ServiceWorkerCache] Implement storage::QuotaClient

Revert of [ServiceWorkerCache] Implement storage::QuotaClient (patchset #12 id:320001 of https://codereview.chromium.org/651983002/)

Reason for revert:
bug 424923, top crash in canary.

Original issue's description:
> [ServiceWorkerCache] Implement storage::QuotaClient
>
> Adds a QuotaClient for the ServiceWorkerCache system.
>
> * Calls to the QuotaManagerProxy like (NotifyStorageAccessed/StorageModified/OriginInUse/etc..) will be in an upcoming CL.
>
> * The ServiceWorkerCacheQuotaClient is registered by the ServiceWorkerCacheStorageManager.  The QuotaClient holds a WeakPtr to the ServiceWorkerCacheStorageManager since the manager is destroyed before the QuotaClient.
>
> * Added a number of unittests.  They fit better into the StorageManager tests file than in their own file as they rely on a lot of the StorageManager infrastructure.
>
> * In order to support QuotaClient the ServiceWorkerCacheStorageManager needs to be able to list the origins it supports. This data is not currently stored so an "origin" member has been added to the CacheStorage index protobuf.  We won't report the origins of existing caches (if any even exist at this point) until their index is next written.
>
> BUG=420159
>
> Committed: https://crrev.com/22fcbd3c898136dfe839de3ca5cb0633c17bb163
> Cr-Commit-Position: refs/heads/master@{#300187}

TBR=michaeln@chromium.org,falken@chromium.org,jkarlin@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=420159
Committed: https://crrev.com/1be6b8a362cbefdb843df448ed5ad08d57ff10a5
Cr-Commit-Position: refs/heads/master@{#300224}

[kareng, 2014-10-19 05:15:49]

Created Revert of [ServiceWorkerCache] Implement storage::QuotaClient

[commit-bot: I haz the power, 2014-10-19 05:16:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/651433005/1

[commit-bot: I haz the power, 2014-10-19 05:16:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-19 05:17:46]

Patchset 1 (id:??) landed as
https://crrev.com/1be6b8a362cbefdb843df448ed5ad08d57ff10a5
Cr-Commit-Position: refs/heads/master@{#300224}