Change 'mute' parameter of MediaChannel::SetAudioSend()/SetVideoSend() to 'enable'.

talk/media/webrtc/webrtcvideoengine2.cc

Index: talk/media/webrtc/webrtcvideoengine2.cc
diff --git a/talk/media/webrtc/webrtcvideoengine2.cc b/talk/media/webrtc/webrtcvideoengine2.cc
index 0ee1d7b85b576d0a964fd1b49523af71cf89187d..b94d24d5987222fc4149dfc3633517ac7851fc5c 100644
--- a/talk/media/webrtc/webrtcvideoengine2.cc
+++ b/talk/media/webrtc/webrtcvideoengine2.cc
@@ -1036,14 +1036,14 @@ bool WebRtcVideoChannel2::SetSend(bool send) {
   return true;
 }
 
-bool WebRtcVideoChannel2::SetVideoSend(uint32 ssrc, bool mute,
+bool WebRtcVideoChannel2::SetVideoSend(uint32 ssrc, bool enable,
                                        const VideoOptions* options) {
   // TODO(solenberg): The state change should be fully rolled back if any one of
   //                  these calls fail.
-  if (!MuteStream(ssrc, mute)) {
+  if (!MuteStream(ssrc, !enable)) {
     return false;
   }
-  if (!mute && options) {
+  if (enable && options) {
     return SetOptions(*options);
   } else {
     return true;