Implements RTP header dumping.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 26039a4aa6850c6c5560edd45a16ebd55b4ef3be..b81edeb02717bcddd23bb8a165076577ecf321e6 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -807,9 +807,10 @@ void RenderProcessHostImpl::CreateMessageFilters() {
   }
 
 #if defined(ENABLE_WEBRTC)
-  AddFilter(new P2PSocketDispatcherHost(
+  p2p_socket_dispatcher_host_ = new P2PSocketDispatcherHost(
       resource_context,
-      browser_context->GetRequestContextForRenderProcess(GetID())));
+      browser_context->GetRequestContextForRenderProcess(GetID()));
+  AddFilter(p2p_socket_dispatcher_host_);
 #endif
 
   AddFilter(new TraceMessageFilter());
@@ -1511,6 +1512,26 @@ void RenderProcessHostImpl::SetWebRtcLogMessageCallback(
     base::Callback<void(const std::string&)> callback) {
   webrtc_log_message_callback_ = callback;
 }
+
+RenderProcessHostImpl::WebRtcStopRtpDumpCallback
+RenderProcessHostImpl::StartRtpDump(
+    bool incoming,
+    bool outgoing,
+    const WebRtcRtpPacketCallback& packet_callback) {
+  if (!p2p_socket_dispatcher_host_)
+    return WebRtcStopRtpDumpCallback();
+
+  BrowserThread::PostTask(BrowserThread::IO,
+                          FROM_HERE,
+                          base::Bind(&P2PSocketDispatcherHost::StartRtpDump,
+                                     p2p_socket_dispatcher_host_,
+                                     incoming,
+                                     outgoing,
+                                     packet_callback));
+
+  return base::Bind(&P2PSocketDispatcherHost::StopRtpDumpOnUIThread,
+                    p2p_socket_dispatcher_host_);
+}
 #endif
 
 IPC::ChannelProxy* RenderProcessHostImpl::GetChannel() {