changeSignalingState  552 Source/modules/mediastream/RTCPeerConnection.cpp     changeSignalingState(SignalingStateClosed);
changeSignalingState  574 Source/modules/mediastream/RTCPeerConnection.cpp     changeSignalingState(newState);
changeSignalingState  142 Source/modules/mediastream/RTCPeerConnection.h     void changeSignalingState(blink::WebRTCPeerConnectionHandlerClient::SignalingState);