
Sometimes the auth server returns '403 Rate Limit Exceeded' but it is treated as a permanent error and makes Files.app offline-mode. This patch makes '403' treated as a temporary error. BUG=180830 TEST=Repeat logging-in and opening Files.app 20 times, and confirms the error is not happen. Review URL: https://codereview.chromium.org/12630010 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@189787 0039d316-1c4b-4281-b951-d872f2087c98