Use kRenderQuantumFrames in more places

third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.h

Index: third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.h
diff --git a/third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.h b/third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.h
index 347795abcdb1acf13f4a2bcecc42bf68607d56be..30eb3f96250f62172187488c708a8874394ef224 100644
--- a/third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.h
+++ b/third_party/WebKit/Source/modules/webaudio/OfflineAudioDestinationNode.h
@@ -61,15 +61,15 @@ class OfflineAudioDestinationHandler final : public AudioDestinationHandler {
 
   float sampleRate() const override { return m_renderTarget->sampleRate(); }
 
-  size_t renderQuantumFrames() const { return renderQuantumSize; }
+  size_t renderQuantumFrames() const {
+    return AudioUtilities::kRenderQuantumFrames;
+  }
 
   WebThread* offlineRenderThread();
 
  private:
   OfflineAudioDestinationHandler(AudioNode&, AudioBuffer* renderTarget);
 
-  static const size_t renderQuantumSize;
-
   // Set up the rendering and start. After setting the context up, it will
   // eventually call |doOfflineRendering|.
   void startOfflineRendering();