Don't delay setting of channelInterpretation and channelCountMode

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

Index: third_party/WebKit/Source/modules/webaudio/PannerNode.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/PannerNode.cpp b/third_party/WebKit/Source/modules/webaudio/PannerNode.cpp
index 19d96f764d31eb9259e5588101defe8bcd3a5b21..401894300143d4dc4d616a2114230c1e05f532cb 100644
--- a/third_party/WebKit/Source/modules/webaudio/PannerNode.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/PannerNode.cpp
@@ -72,8 +72,8 @@ PannerHandler::PannerHandler(
 
     // Node-specific default mixing rules.
     m_channelCount = 2;
-    m_channelCountMode = ClampedMax;
-    m_channelInterpretation = AudioBus::Speakers;
+    setInternalChannelCountMode(ClampedMax);
+    setInternalChannelInterpretation(AudioBus::Speakers);
 
     // Explicitly set the default panning model here so that the histograms
     // include the default value.
@@ -565,7 +565,7 @@ void PannerHandler::setChannelCount(unsigned long channelCount, ExceptionState&
     if (channelCount > 0 && channelCount <= 2) {
         if (m_channelCount != channelCount) {
             m_channelCount = channelCount;
-            if (m_channelCountMode != Max)
+            if (internalChannelCountMode() != Max)
                 updateChannelsForInputs();
         }
     } else {
@@ -586,25 +586,16 @@ void PannerHandler::setChannelCountMode(const String& mode, ExceptionState& exce
     ASSERT(isMainThread());
     BaseAudioContext::AutoLocker locker(context());
 
-    ChannelCountMode oldMode = m_channelCountMode;
-
     if (mode == "clamped-max") {
-        m_newChannelCountMode = ClampedMax;
+        setInternalChannelCountMode(ClampedMax);
     } else if (mode == "explicit") {
-        m_newChannelCountMode = Explicit;
+        setInternalChannelCountMode(Explicit);
     } else if (mode == "max") {
         // This is not supported for a PannerNode, which can only handle 1 or 2 channels.
         exceptionState.throwDOMException(
             NotSupportedError,
                 "Panner: 'max' is not allowed");
-        m_newChannelCountMode = oldMode;
-    } else {
-        // Do nothing for other invalid values.
-        m_newChannelCountMode = oldMode;
     }
-
-    if (m_newChannelCountMode != oldMode)
-        context()->deferredTaskHandler().addChangedChannelCountMode(this);
 }
 
 bool PannerHandler::hasSampleAccurateValues() const