Setup WebRTC event tracing in renderers.

BUG=


Review URL: https://chromiumcodereview.appspot.com/11638036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@174637 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed