Made AudioNode an EventTarget

Source/modules/webaudio/AudioScheduledSourceNode.h

Index: Source/modules/webaudio/AudioScheduledSourceNode.h
diff --git a/Source/modules/webaudio/AudioScheduledSourceNode.h b/Source/modules/webaudio/AudioScheduledSourceNode.h
index 0a4502ec9d2b0105466fbc3db7c2f20583ccf2fd..2d80b89932fa63848990bf683677c11763160cd0 100644
--- a/Source/modules/webaudio/AudioScheduledSourceNode.h
+++ b/Source/modules/webaudio/AudioScheduledSourceNode.h
@@ -53,13 +53,16 @@ public:
         PLAYING_STATE = 2,
         FINISHED_STATE = 3
     };
-    
+
     AudioScheduledSourceNode(AudioContext*, float sampleRate);
 
     // Scheduling.
     void start(double when);
     void stop(double when);
 
+    // un-hide the ActiveDOMElement stop
+    using AudioSourceNode::stop;
+
 #if ENABLE(LEGACY_WEB_AUDIO)
     void noteOn(double when);
     void noteOff(double when);