Enable renegotiate tests.

content/browser/media/webrtc/webrtc_browsertest_audio.cc

Index: content/browser/media/webrtc/webrtc_browsertest_audio.cc
diff --git a/content/browser/media/webrtc/webrtc_browsertest_audio.cc b/content/browser/media/webrtc/webrtc_browsertest_audio.cc
index 7b6557ddc88fc871f83b353a11c9e23038fa8c3d..a321e451fbbbdbc9eae81994c375c8583d96126c 100644
--- a/content/browser/media/webrtc/webrtc_browsertest_audio.cc
+++ b/content/browser/media/webrtc/webrtc_browsertest_audio.cc
@@ -62,9 +62,8 @@ class MAYBE_WebRtcBrowserAudioTest : public WebRtcContentBrowserTest {
   }
 };
 
-// Causes asserts in libjingle: http://crbug.com/484826.
 IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcBrowserAudioTest,
-                       DISABLED_CanMakeVideoCallAndThenRenegotiateToAudio) {
+                       CanMakeVideoCallAndThenRenegotiateToAudio) {
   MakeAudioDetectingPeerConnectionCall(
       "callAndRenegotiateToAudio({audio: true, video:true}, {audio: true});");
 }