ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * 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
@@ skipping 469 matching lines @@
   peerConnection->m_peerHandler->logSelectedRtcpMuxPolicy(
       selectedRtcpMuxPolicy);
 
   return peerConnection;
 }
 
 RTCPeerConnection::RTCPeerConnection(ExecutionContext* context,
                                      const WebRTCConfiguration& configuration,
                                      WebMediaConstraints constraints,
                                      ExceptionState& exceptionState)
-    : ActiveScriptWrappable(this),
+    : ActiveScriptWrappable<RTCPeerConnection>(this),
       SuspendableObject(context),
       m_signalingState(SignalingStateStable),
       m_iceGatheringState(ICEGatheringStateNew),
       m_iceConnectionState(ICEConnectionStateNew),
       m_dispatchScheduledEventRunner(
           AsyncMethodRunner<RTCPeerConnection>::create(
               this,
               &RTCPeerConnection::dispatchScheduledEvent)),
       m_stopped(false),
       m_closed(false),
@@ skipping 988 matching lines @@
 DEFINE_TRACE(RTCPeerConnection) {
   visitor->trace(m_localStreams);
   visitor->trace(m_remoteStreams);
   visitor->trace(m_dispatchScheduledEventRunner);
   visitor->trace(m_scheduledEvents);
   EventTargetWithInlineData::trace(visitor);
   SuspendableObject::trace(visitor);
 }
 
 }  // namespace blink