Implement tail processing for AudioNodes

third_party/WebKit/Source/platform/audio/EqualPowerPanner.h

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 35 matching lines @@
                                    double* elevation,
                                    const AudioBus* input_bus,
                                    AudioBus* output_bus,
                                    size_t frames_to_process,
                                    AudioBus::ChannelInterpretation) override;
 
   void Reset() override {}
 
   double TailTime() const override { return 0; }
   double LatencyTime() const override { return 0; }
+  bool RequiresTailProcessing() const override { return false; }
 
  private:
   void CalculateDesiredGain(double& desired_gain_l,
                             double& desired_gain_r,
                             double azimuth,
                             int number_of_channels);
 };
 
 }  // namespace blink
 
 #endif  // EqualPowerPanner_h