GitLab

Removes mock expectations that are no longer needed. This also results
in removal of all direct {Mock}NetworkLibrary dependencies
in chromeos/login/*.

BUG=189035

Review URL: https://chromiumcodereview.appspot.com/16196006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@203979 0039d316-1c4b-4281-b951-d872f2087c98