GitLab

filemanager: Fix GetDriveConnectionStateFunctionChange to return "offline" when DriveSystemService is unavailable.

Connection-type "offline" is returned with reason "no_service"
Also renamed related variables in JS.

BUG=175522
TEST=Verfify Files app (including "open file", "save file" dialogs) is working if Drive is disblaed, in Incognito window, in Guest mode.

Review URL: https://codereview.chromium.org/12221132

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182428 0039d316-1c4b-4281-b951-d872f2087c98