Add tracing to upper-level WebRTC calls.

talk/app/webrtc/webrtcsession.cc

 /*
  * libjingle
  * Copyright 2012 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 32 matching lines @@
 #include "talk/media/base/videocapturer.h"
 #include "talk/session/media/channel.h"
 #include "talk/session/media/channelmanager.h"
 #include "talk/session/media/mediasession.h"
 #include "webrtc/base/basictypes.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/base/helpers.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/stringencode.h"
 #include "webrtc/base/stringutils.h"
+#include "webrtc/base/trace_event.h"
 #include "webrtc/call.h"
 #include "webrtc/p2p/base/portallocator.h"
 #include "webrtc/p2p/base/transportchannel.h"
 
 using cricket::ContentInfo;
 using cricket::ContentInfos;
 using cricket::MediaContentDescription;
 using cricket::SessionDescription;
 using cricket::TransportInfo;
 
@@ skipping 720 matching lines @@
 void WebRtcSession::CreateAnswer(
     CreateSessionDescriptionObserver* observer,
     const MediaConstraintsInterface* constraints,
     const cricket::MediaSessionOptions& session_options) {
   webrtc_session_desc_factory_->CreateAnswer(observer, constraints,
                                              session_options);
 }
 
 bool WebRtcSession::SetLocalDescription(SessionDescriptionInterface* desc,
                                         std::string* err_desc) {
+  TRACE_EVENT0("webrtc", "WebRtcSession::SetLocalDescription");
   ASSERT(signaling_thread()->IsCurrent());
 
   // Takes the ownership of |desc| regardless of the result.
   rtc::scoped_ptr<SessionDescriptionInterface> desc_temp(desc);
 
   // Validate SDP.
   if (!ValidateSessionDescription(desc, cricket::CS_LOCAL, err_desc)) {
     return false;
   }
 
@@ skipping 34 matching lines @@
   }
 
   if (error() != ERROR_NONE) {
     return BadLocalSdp(desc->type(), GetSessionErrorMsg(), err_desc);
   }
   return true;
 }
 
 bool WebRtcSession::SetRemoteDescription(SessionDescriptionInterface* desc,
                                          std::string* err_desc) {
+  TRACE_EVENT0("webrtc", "WebRtcSession::SetRemoteDescription");
   ASSERT(signaling_thread()->IsCurrent());
 
   // Takes the ownership of |desc| regardless of the result.
   rtc::scoped_ptr<SessionDescriptionInterface> desc_temp(desc);
 
   // Validate SDP.
   if (!ValidateSessionDescription(desc, cricket::CS_REMOTE, err_desc)) {
     return false;
   }
 
@@ skipping 1332 matching lines @@
   }
 }
 
 void WebRtcSession::OnSentPacket_w(cricket::TransportChannel* channel,
                                    const rtc::SentPacket& sent_packet) {
   RTC_DCHECK(worker_thread()->IsCurrent());
   media_controller_->call_w()->OnSentPacket(sent_packet);
 }
 
 }  // namespace webrtc