Return the correct channelCountMode and channelInterpretation

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

Index: third_party/WebKit/Source/modules/webaudio/StereoPannerNode.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/StereoPannerNode.cpp b/third_party/WebKit/Source/modules/webaudio/StereoPannerNode.cpp
index 82ae762e55c6422e83b4455b56d8b08b24ef384a..6ea8c35b609682890ea0bb495dd91dce2a1f5d85 100644
--- a/third_party/WebKit/Source/modules/webaudio/StereoPannerNode.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/StereoPannerNode.cpp
@@ -26,8 +26,8 @@ StereoPannerHandler::StereoPannerHandler(AudioNode& node, float sampleRate, Audi
     // The node-specific default mixing rules declare that StereoPannerNode
     // can handle mono to stereo and stereo to stereo conversion.
     m_channelCount = 2;
-    m_channelCountMode = ClampedMax;
-    m_channelInterpretation = AudioBus::Speakers;
+    setInternalChannelCountMode(ClampedMax);
+    setInternalChannelInterpretation(AudioBus::Speakers);
 
     initialize();
 }
@@ -89,7 +89,7 @@ void StereoPannerHandler::setChannelCount(unsigned long channelCount, ExceptionS
     if (channelCount > 0 && channelCount <= 2) {
         if (m_channelCount != channelCount) {
             m_channelCount = channelCount;
-            if (m_channelCountMode != Max)
+            if (internalChannelCountMode() != Max)
                 updateChannelsForInputs();
         }
     } else {
@@ -110,7 +110,7 @@ void StereoPannerHandler::setChannelCountMode(const String& mode, ExceptionState
     DCHECK(isMainThread());
     BaseAudioContext::AutoLocker locker(context());
 
-    ChannelCountMode oldMode = m_channelCountMode;
+    ChannelCountMode oldMode = internalChannelCountMode();
 
     if (mode == "clamped-max") {
         m_newChannelCountMode = ClampedMax;