Add constructors for WebAudio nodes

third_party/WebKit/Source/modules/webaudio/AudioNode.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
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  * modification, are permitted provided that the following conditions
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 #include "modules/webaudio/AudioNode.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/inspector/InstanceCounters.h"
 #include "modules/webaudio/AudioNodeInput.h"
+#include "modules/webaudio/AudioNodeOptions.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/AudioParam.h"
 #include "modules/webaudio/BaseAudioContext.h"
 #include "wtf/Atomics.h"
 
 #if DEBUG_AUDIONODE_REFERENCES
 #include <stdio.h>
 #endif
 
 namespace blink {
@@ skipping 545 matching lines @@
 }
 
 DEFINE_TRACE(AudioNode)
 {
     visitor->trace(m_context);
     visitor->trace(m_connectedNodes);
     visitor->trace(m_connectedParams);
     EventTargetWithInlineData::trace(visitor);
 }
 
+void AudioNode::handleChannelOptions(const AudioNodeOptions& options, ExceptionState& exceptionState)
+{
+    DCHECK(isMainThread());
+
+    if (options.hasChannelCount())
+        setChannelCount(options.channelCount(), exceptionState);
+    if (options.hasChannelCountMode())
+        setChannelCountMode(options.channelCountMode(), exceptionState);
+    if (options.hasChannelInterpretation())
+        setChannelInterpretation(options.channelInterpretation(), exceptionState);
+}
+
 BaseAudioContext* AudioNode::context() const
 {
     return m_context;
 }
 
 AudioNode* AudioNode::connect(AudioNode* destination, unsigned outputIndex, unsigned inputIndex, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
     BaseAudioContext::AutoLocker locker(context());
 
@@ skipping 369 matching lines @@
 void AudioNode::didAddOutput(unsigned numberOfOutputs)
 {
     m_connectedNodes.append(nullptr);
     DCHECK_EQ(numberOfOutputs, m_connectedNodes.size());
     m_connectedParams.append(nullptr);
     DCHECK_EQ(numberOfOutputs, m_connectedParams.size());
 }
 
 } // namespace blink