WebAudio: Remove AudioNode::RefType.

Source/modules/webaudio/AudioContext.cpp

Index: Source/modules/webaudio/AudioContext.cpp
diff --git a/Source/modules/webaudio/AudioContext.cpp b/Source/modules/webaudio/AudioContext.cpp
index 76ca004c0f6b759971354c39f9f4a02380ff12da..b95baa9b5029229b3c05accae3cbd6c20fcef04b 100644
--- a/Source/modules/webaudio/AudioContext.cpp
+++ b/Source/modules/webaudio/AudioContext.cpp
@@ -586,18 +586,17 @@ void AudioContext::refNode(AudioNode* node)
     ASSERT(isMainThread());
     AutoLocker locker(this);
 
-    node->ref(AudioNode::RefTypeConnection);
     m_referencedNodes.append(node);
+    node->makeConnection();
 }
 
 void AudioContext::derefNode(AudioNode* node)
 {
     ASSERT(isGraphOwner());
 
-    node->deref(AudioNode::RefTypeConnection);
-
     for (unsigned i = 0; i < m_referencedNodes.size(); ++i) {
-        if (node == m_referencedNodes[i]) {
+        if (node == m_referencedNodes[i].get()) {
+            node->breakConnection();
             m_referencedNodes.remove(i);
             break;
         }
@@ -608,7 +607,7 @@ void AudioContext::derefUnfinishedSourceNodes()
 {
     ASSERT(isMainThread());
     for (unsigned i = 0; i < m_referencedNodes.size(); ++i)
-        m_referencedNodes[i]->deref(AudioNode::RefTypeConnection);
+        m_referencedNodes[i]->breakConnection();
 
     m_referencedNodes.clear();
 }
@@ -742,7 +741,7 @@ void AudioContext::handleDeferredFinishDerefs()
     ASSERT(isAudioThread() && isGraphOwner());
     for (unsigned i = 0; i < m_deferredFinishDerefList.size(); ++i) {
         AudioNode* node = m_deferredFinishDerefList[i];
-        node->finishDeref(AudioNode::RefTypeConnection);
+        node->finishDeref();
     }
 
     m_deferredFinishDerefList.clear();