Change WebRTC and libJingle to stop using stable branch.
This should be a zero code change.

R=tommi@chromium.org

Review URL: https://codereview.chromium.org/86563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242897 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242898 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242898