GitLab

The modification is not needed anymore, because for dirty files
we always look up metadata from the local cache file (r148712).

Besides, this patch renames OnXXXForCloseFile to CloseFileAfterXXX,
to match the recent convention.

BUG=142466
TEST=existing tests, in particular:
 browser_tests --gtest_filter='RemoteFileSystemExtensionApiTest.RemoteMountPoint'
 unit_tests --gtest_filter='GDataFileSystemTest.OpenAndCloseFile'

Review URL: https://chromiumcodereview.appspot.com/10830298

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151437 0039d316-1c4b-4281-b951-d872f2087c98