WebAudio: Remove AudioNode::RefType.

Source/modules/webaudio/AudioNode.h

Index: Source/modules/webaudio/AudioNode.h
diff --git a/Source/modules/webaudio/AudioNode.h b/Source/modules/webaudio/AudioNode.h
index e66ed7d33167556ae2e58fc74c751dce002a4ba0..c0a73dbb8f4aa94bb10e0acf45dd4b1919fd2298 100644
--- a/Source/modules/webaudio/AudioNode.h
+++ b/Source/modules/webaudio/AudioNode.h
@@ -94,17 +94,19 @@ public:
     String nodeTypeName() const;
     void setNodeType(NodeType);
 
-    // We handle our own ref-counting because of the threading issues and subtle nature of
-    // how AudioNodes can continue processing (playing one-shot sound) after there are no more
-    // JavaScript references to the object.
-    enum RefType { RefTypeNormal, RefTypeConnection };
-
     // Can be called from main thread or context's audio thread.
-    void ref(RefType refType = RefTypeNormal);
-    void deref(RefType refType = RefTypeNormal);
+    void ref();
+    void deref();
+
+    void wasConnected();

[Raymond Toy, 2014/07/09 22:10:34]

Add a comment on what wasConnected() does and when it should be called, like
what you have for willBeDisconnected().

[tkent, 2014/07/10 08:07:42]

Will do

+    // This will be disconnected from an object. This might have remaining
+    // connections from others.
+    // This function should be called before releasing connection-type

[Raymond Toy, 2014/07/09 22:10:34]

"should" or "must" be called?

[tkent, 2014/07/10 08:07:42]

must.  Will update.

+    // references.
+    void willBeDisconnected();
 
     // Can be called from main thread or context's audio thread.  It must be called while the context's graph lock is held.
-    void finishDeref(RefType refType);
+    void finishDeref();
 
     // The AudioNodeInput(s) (if any) will already have their input data available when process() is called.
     // Subclasses will take this input data and put the results in the AudioBus(s) of its AudioNodeOutput(s) (if any).
@@ -226,6 +228,7 @@ private:
     // Ref-counting
     volatile int m_normalRefCount;
     volatile int m_connectionRefCount;
+    bool m_wasDisconnected;
 
     bool m_isMarkedForDeletion;
     bool m_isDisabled;