Remove redundant definition of Spatializer abstract class

third_party/WebKit/Source/platform/audio/StereoPanner.cpp

Index: third_party/WebKit/Source/platform/audio/StereoPanner.cpp
diff --git a/third_party/WebKit/Source/platform/audio/StereoPanner.cpp b/third_party/WebKit/Source/platform/audio/StereoPanner.cpp
index bc636e286b0b1da790ddbd706a9991c04a829a3e..9e9708d70fe3f66ab2e3236a1108340098300d99 100644
--- a/third_party/WebKit/Source/platform/audio/StereoPanner.cpp
+++ b/third_party/WebKit/Source/platform/audio/StereoPanner.cpp
@@ -13,15 +13,16 @@ const float SmoothingTimeConstant = 0.050f;
 
 namespace blink {
 
-// Implement equal-power panning algorithm for mono or stereo input.
-// See: http://webaudio.github.io/web-audio-api/#panning-algorithm
+std::unique_ptr<StereoPanner> StereoPanner::create(float sampleRate)
+{
+    return wrapUnique(new StereoPanner(sampleRate));
+}
 
-StereoPanner::StereoPanner(float sampleRate) : Spatializer(PanningModelEqualPower)
-    , m_isFirstRender(true)
+StereoPanner::StereoPanner(float sampleRate)
+    : m_isFirstRender(true)
+    , m_smoothingConstant(AudioUtilities::discreteTimeConstantForSampleRate(SmoothingTimeConstant, sampleRate))
     , m_pan(0.0)
 {
-    // Convert smoothing time (50ms) to a per-sample time value.
-    m_smoothingConstant = AudioUtilities::discreteTimeConstantForSampleRate(SmoothingTimeConstant, sampleRate);

[Raymond Toy, 2016/08/24 18:30:29]

I'd prefer not changing these lines.

[hongchan, 2016/08/24 21:52:33]

Done.

 }
 
 void StereoPanner::panWithSampleAccurateValues(const AudioBus* inputBus, AudioBus* outputBus, const float* panValues, size_t framesToProcess)
@@ -168,4 +169,3 @@ void StereoPanner::panToTargetValue(const AudioBus* inputBus, AudioBus* outputBu
 }
 
 } // namespace blink
-