Show remaing space of MTP device in File Manager.

Show remaing space of MTP device in File Manager.

This CL shows remaing space at the mount time in file manager.
A CL to make file manager show latest remaing space will come as another CL.

BUG=486396
Committed: https://crrev.com/78cbe4a3e3221f0e33ad72db8be8b5ede8834892
Cr-Commit-Position: refs/heads/master@{#330674}

[yawano, 2015-05-19 03:38:21]

yawano@chromium.org changed reviewers:
+ kinaba@chromium.org

[yawano, 2015-05-19 03:38:21]

PTAL. Thank you!

[kinaba, 2015-05-19 06:01:20]

lgtm

[yawano, 2015-05-19 06:02:25]

On 2015/05/19 06:01:20, kinaba wrote:
> lgtm

Thank you!

[yawano, 2015-05-19 06:02:29]

The CQ bit was checked by yawano@chromium.org

[commit-bot: I haz the power, 2015-05-19 06:02:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1140583005/1

[commit-bot: I haz the power, 2015-05-19 07:10:34]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-05-19 07:10:35]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[yawano, 2015-05-19 09:00:23]

The previous patch set has broken a test case. Fixed with new patch set. PTAL.
Thank you!

[kinaba, 2015-05-19 09:37:31]

https://codereview.chromium.org/1140583005/diff/20001/chrome/browser/chromeos...
File chrome/browser/chromeos/extensions/file_manager/private_api_file_system.cc
(right):

https://codereview.chromium.org/1140583005/diff/20001/chrome/browser/chromeos...
chrome/browser/chromeos/extensions/file_manager/private_api_file_system.cc:442:
}
I guess it's safer to return false when it is unavailable.

[yawano, 2015-05-19 12:08:13]

Thank you for the review! PTAL.

https://codereview.chromium.org/1140583005/diff/20001/chrome/browser/chromeos...
File chrome/browser/chromeos/extensions/file_manager/private_api_file_system.cc
(right):

https://codereview.chromium.org/1140583005/diff/20001/chrome/browser/chromeos...
chrome/browser/chromeos/extensions/file_manager/private_api_file_system.cc:442:
}
On 2015/05/19 09:37:31, kinaba wrote:
> I guess it's safer to return false when it is unavailable.

Done.

[kinaba, 2015-05-19 12:15:40]

lgtm

[yawano, 2015-05-20 01:52:12]

On 2015/05/19 12:15:40, kinaba wrote:
> lgtm

Thank you!

[yawano, 2015-05-20 01:52:20]

The CQ bit was checked by yawano@chromium.org

[commit-bot: I haz the power, 2015-05-20 01:54:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1140583005/40001

[commit-bot: I haz the power, 2015-05-20 01:59:49]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-20 02:03:08]

Patchset 3 (id:??) landed as
https://crrev.com/78cbe4a3e3221f0e33ad72db8be8b5ede8834892
Cr-Commit-Position: refs/heads/master@{#330674}