Enable renegotiate tests.

content/browser/media/webrtc/webrtc_browsertest.cc

Index: content/browser/media/webrtc/webrtc_browsertest.cc
diff --git a/content/browser/media/webrtc/webrtc_browsertest.cc b/content/browser/media/webrtc/webrtc_browsertest.cc
index b40113c975b77f4f2644964c2518d102dfe18487..14cc4223b8c646e51aaa9d53465a2c359da3a894 100644
--- a/content/browser/media/webrtc/webrtc_browsertest.cc
+++ b/content/browser/media/webrtc/webrtc_browsertest.cc
@@ -113,9 +113,8 @@ IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserTest,
   MakeTypicalPeerConnectionCall(kJavascript);
 }
 
-// Causes asserts in libjingle: http://crbug.com/484826.
 IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserTest,
-                       DISABLED_CanMakeAudioCallAndThenRenegotiateToVideo) {
+                       CanMakeAudioCallAndThenRenegotiateToVideo) {
   const char* kJavascript =
       "callAndRenegotiateToVideo({audio: true}, {audio: true, video:true});";
   MakeTypicalPeerConnectionCall(kJavascript);