Roll WebRTC 6189:6248.

TBR=ronghuawu@chromium.org

Review URL: https://codereview.chromium.org/302583003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272937 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -54,7 +54,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling WebRTC
   # and V8 without interference from each other.
-  "webrtc_revision": "6189",
+  "webrtc_revision": "6248",
   "jsoncpp_revision": "248",
   "nss_revision": "271760",
   # Three lines of non-changing comments so that

third_party/libjingle/README.chromium

 Name: libjingle
 URL: http://code.google.com/p/webrtc/
 Version: unknown
-Revision: 6189
+Revision: 6248
 License: BSD
 License File: source/talk/COPYING
 Security Critical: yes