Disable uploading for the hangouts services browser test.

BUG=316613
R=joi@chromium.org

Review URL: https://codereview.chromium.org/68863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234466 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234466