drive: Remove FakeCacheMetadata

drive: Remove FakeCacheMetadata

FakeCacheMetadata has been maintained to avoid slowness in tests (http://crbug.com/137945).
But we are going to merge cache DB with metadata DB and there will be no cache DB initialization at all. (i.e. 0 second spent for cache DB initialization in future)
We no longer need to maintain this level of abstraction.

BUG=234487
TEST=unit_tests
R=kinaba@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=203878

[kinaba, 2013-06-04 06:24:46]

lgtm

https://codereview.chromium.org/16338005/diff/2001/chrome/browser/chromeos/dr...
File chrome/browser/chromeos/drive/file_cache_metadata.h (right):

https://codereview.chromium.org/16338005/diff/2001/chrome/browser/chromeos/dr...
chrome/browser/chromeos/drive/file_cache_metadata.h:43: explicit
FileCacheMetadata(base::SequencedTaskRunner* blocking_task_runner);
Could you add a comment that NULL is allowed during testing?

https://codereview.chromium.org/16338005/diff/2001/chrome/browser/chromeos/dr...
chrome/browser/chromeos/drive/file_cache_metadata.h:45: virtual
~FileCacheMetadata();
You can drop virtual here, too.

[hashimoto, 2013-06-04 06:30:38]

https://codereview.chromium.org/16338005/diff/2001/chrome/browser/chromeos/dr...
File chrome/browser/chromeos/drive/file_cache_metadata.h (right):

https://codereview.chromium.org/16338005/diff/2001/chrome/browser/chromeos/dr...
chrome/browser/chromeos/drive/file_cache_metadata.h:43: explicit
FileCacheMetadata(base::SequencedTaskRunner* blocking_task_runner);
On 2013/06/04 06:24:46, kinaba wrote:
> Could you add a comment that NULL is allowed during testing?

Done.

https://codereview.chromium.org/16338005/diff/2001/chrome/browser/chromeos/dr...
chrome/browser/chromeos/drive/file_cache_metadata.h:45: virtual
~FileCacheMetadata();
On 2013/06/04 06:24:46, kinaba wrote:
> You can drop virtual here, too.

Done.

[commit-bot: I haz the power, 2013-06-04 06:30:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/hashimoto@chromium.org/16338005/6002

[hashimoto, 2013-06-04 06:55:55]

Committed patchset #2 manually as r203878 (presubmit successful).