GitLab

DriveIntegrationServiceFactory::GetForProfile will return the instance
regardless of whether the Drive is enabled or not. GetFileSystemByProfile will
still be looking at enabled state.

BUG=284972
TEST=Ran unit_tests

Review URL: https://chromiumcodereview.appspot.com/23739005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221998 0039d316-1c4b-4281-b951-d872f2087c98