Cache Storage: Move files to content/*/cache_storage, rename classes

Cache Storage: Move files to content/*/cache_storage, rename classes

* Introduce content/*/cache_storage
* Move Cache Storage files from content/*/service_worker
* Update gypi/gn files
* Rename classes, ipc messages, protobuf messages

The renames are basically mechanical:
* ServiceWorkerCacheStorageFoo -> CacheStorageFoo
* ServiceWorkerCacheFoo -> CacheStorageFoo
* ServiceWorkerCache -> CacheStorageCache (not just 'Cache')

Also, made jkarlin@ and jsbell@ (that's me!) OWNERS in the new
directories in addition to the */service_worker/OWNERS.

BUG=439389
Committed: https://crrev.com/279efb4de2d891d4575329c853e1c9858c057d2a
Cr-Commit-Position: refs/heads/master@{#323060}

[jsbell, 2015-03-27 21:52:32]

jsbell@chromium.org changed reviewers:
+ jkarlin@chromium.org

[jsbell, 2015-03-27 21:52:33]

jkarlin@ - can you take a look and see if the naming makes sense to you?

[jkarlin, 2015-03-30 12:53:13]

lgtm

[jsbell, 2015-03-30 16:26:40]

jsbell@chromium.org changed reviewers:
+ falken@chromium.org, horo@chromium.org, jam@chromium.org, kinuko@chromium.org,
michaeln@chromium.org, nhiroki@chromium.org, tsepez@chromium.org

[jsbell, 2015-03-30 16:26:41]

tsepez@ - can you review the messaging changes? (just file move/message renames)

jam@ - can you review the addition of the new directory and naming, and the
generic stuff like renames in storage_impl and renderer_host?

michaeln@, falken@, horo@, nhiroki@, kinuko@ - (current OWNERS) - are you okay
with these changes and the OWNERS additions?

[Tom Sepez, 2015-03-30 18:58:00]

RS LGTM on renames.

[jam, 2015-03-30 21:10:38]

rubberstamp lgtm

[kinuko, 2015-03-31 02:13:44]

On 2015/03/30 16:26:41, jsbell wrote:
> tsepez@ - can you review the messaging changes? (just file move/message
renames)
> 
> jam@ - can you review the addition of the new directory and naming, and the
> generic stuff like renames in storage_impl and renderer_host?
> 
> michaeln@, falken@, horo@, nhiroki@, kinuko@ - (current OWNERS) - are you okay
> with these changes and the OWNERS additions?

Sure, lgtm. We can even remove some of old owners once we find we don't touch
there very often

[nhiroki, 2015-03-31 04:44:32]

On 2015/03/31 02:13:44, kinuko wrote:
> On 2015/03/30 16:26:41, jsbell wrote:
> > tsepez@ - can you review the messaging changes? (just file move/message
> renames)
> > 
> > jam@ - can you review the addition of the new directory and naming, and the
> > generic stuff like renames in storage_impl and renderer_host?
> > 
> > michaeln@, falken@, horo@, nhiroki@, kinuko@ - (current OWNERS) - are you
okay
> > with these changes and the OWNERS additions?
> 
> Sure, lgtm. We can even remove some of old owners once we find we don't touch
> there very often

lgtm!

[horo, 2015-03-31 15:38:23]

lgtm

[jsbell, 2015-03-31 16:03:40]

The CQ bit was checked by jsbell@chromium.org

[commit-bot: I haz the power, 2015-03-31 16:04:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1039763002/20001

[commit-bot: I haz the power, 2015-03-31 17:02:59]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-31 17:03:58]

Patchset 2 (id:??) landed as
https://crrev.com/279efb4de2d891d4575329c853e1c9858c057d2a
Cr-Commit-Position: refs/heads/master@{#323060}