Remove redundant definition of Spatializer abstract class

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/webaudio/StereoPannerNode.h"
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "modules/webaudio/AudioNodeInput.h"
@@ skipping 57 matching lines @@
     } else {
         m_stereoPanner->panToTargetValue(inputBus, outputBus, m_pan->value(), framesToProcess);
     }
 }
 
 void StereoPannerHandler::initialize()
 {
     if (isInitialized())
         return;
 
-    m_stereoPanner = Spatializer::create(Spatializer::PanningModelEqualPower, sampleRate());
+    m_stereoPanner = StereoPanner::create(sampleRate());
 
     AudioHandler::initialize();
 }
 
 void StereoPannerHandler::setChannelCount(unsigned long channelCount, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
     BaseAudioContext::AutoLocker locker(context());
 
     // A PannerNode only supports 1 or 2 channels
@@ skipping 61 matching lines @@
     AudioNode::trace(visitor);
 }
 
 AudioParam* StereoPannerNode::pan() const
 {
     return m_pan;
 }
 
 } // namespace blink