Roll webrtc 5122:5233

TBR=ronghuawu@chromium.org

Review URL: https://codereview.chromium.org/107253002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239091 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239092 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239092