[FileAPI] Disable usage cache for origin after file opening for pepper.

[FileAPI] Disable usage cache for origin after file opening for pepper.

For PERSISTENT FileSystem on UnlimitedStorage origin, a file descriptor opened by CreateOrOpen can be passed to a pepper plugin, and we'll lose report-based usage tracking.
This CL conservatively disables usage cache for the origin until browser restart in the case, and invokes the usage recalculation on a usage query.

BUG=220029
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=197312

[tzik, 2013-04-30 04:57:46]

PTL

[kinuko, 2013-04-30 05:14:23]

https://codereview.chromium.org/14612002/diff/1/webkit/fileapi/obfuscated_fil...
File webkit/fileapi/obfuscated_file_util.cc (right):

https://codereview.chromium.org/14612002/diff/1/webkit/fileapi/obfuscated_fil...
webkit/fileapi/obfuscated_file_util.cc:268: url.type() ==
kFileSystemTypePersistent) {
instead should we check context->quota_limit_type() so that we won't forget
enabling this for temp when we're ready?

[tzik, 2013-04-30 05:26:22]

https://codereview.chromium.org/14612002/diff/1/webkit/fileapi/obfuscated_fil...
File webkit/fileapi/obfuscated_file_util.cc (right):

https://codereview.chromium.org/14612002/diff/1/webkit/fileapi/obfuscated_fil...
webkit/fileapi/obfuscated_file_util.cc:268: url.type() ==
kFileSystemTypePersistent) {
On 2013/04/30 05:14:23, kinuko wrote:
> instead should we check context->quota_limit_type() so that we won't forget
> enabling this for temp when we're ready?

Done.

[kinuko, 2013-04-30 05:40:57]

lgtm

[commit-bot: I haz the power, 2013-04-30 05:59:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tzik@chromium.org/14612002/7001

[commit-bot: I haz the power, 2013-04-30 08:34:52]

Change committed as 197312