Update webrtc to r5444.

R=perkj@chromium.org

Review URL: https://codereview.chromium.org/139283012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247442 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247443 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247443