Merge 142887

Source/WebCore/Modules/mediastream/RTCPeerConnection.cpp

Index: Source/WebCore/Modules/mediastream/RTCPeerConnection.cpp
===================================================================
--- Source/WebCore/Modules/mediastream/RTCPeerConnection.cpp	(revision 143163)
+++ Source/WebCore/Modules/mediastream/RTCPeerConnection.cpp	(working copy)
@@ -163,6 +163,7 @@
 
 RTCPeerConnection::~RTCPeerConnection()
 {
+    stop();
 }
 
 void RTCPeerConnection::createOffer(PassRefPtr<RTCSessionDescriptionCallback> successCallback, PassRefPtr<RTCErrorCallback> errorCallback, const Dictionary& mediaConstraints, ExceptionCode& ec)
@@ -565,6 +566,9 @@
 
 void RTCPeerConnection::stop()
 {
+    if (m_stopped)
+        return;
+
     m_stopped = true;
     m_iceState = IceStateClosed;
     m_readyState = ReadyStateClosed;