Create ShareableFileReference on IO thread

Create ShareableFileReference on IO thread

* ShareableFileReference is not thread-safe, we should make sure we only handle it on IO thread
* FileUtil implementation no longer needs to directly handle ShareableFileReference

BUG=140508
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=149992

[kinuko, 2012-08-03 23:00:07]

PTL thanks!

[tzik, 2012-08-03 23:12:32]

On 2012/08/03 23:00:07, kinuko wrote:
> PTL thanks!

Looks good.
Could you add NonThreadSafe to base class of ShareableFileReference, and add
assertion?

[kinuko, 2012-08-03 23:15:04]

On 2012/08/03 23:12:32, tzik wrote:
> On 2012/08/03 23:00:07, kinuko wrote:
> > PTL thanks!
> 
> Looks good.
> Could you add NonThreadSafe to base class of ShareableFileReference, and add
> assertion?

Yeah I'm going to do, but could we do that in a separate CL?

[michaeln, 2012-08-03 23:15:57]

LGTM

[kinuko, 2012-08-03 23:17:17]

+kmadhusu
Kausalya, can you take a quick look at the changes in device_media_file_util.cc?

[tzik, 2012-08-03 23:17:17]

lgtm

[kmadhusu, 2012-08-03 23:41:20]

lgtm

[commit-bot: I haz the power, 2012-08-03 23:51:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kinuko@chromium.org/10834167/7003

[commit-bot: I haz the power, 2012-08-04 01:23:57]

Change committed as 149992