AudioConverter: Express delay in frames rather than msec.

media/base/audio_buffer_converter.h

 // 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.
 
 #ifndef MEDIA_BASE_AUDIO_BUFFER_CONVERTER
 #define MEDIA_BASE_AUDIO_BUFFER_CONVERTER
 
 #include <deque>
 #include <memory>
 
@@ skipping 33 matching lines @@
 
   int input_buffer_size_for_testing() const {
     return input_params_.frames_per_buffer();
   }
   int input_frames_left_for_testing() const {
     return input_frames_;
   }
 
  private:
   // Callback to provide data to the AudioConverter
-  double ProvideInput(AudioBus* audio_bus,
-                      base::TimeDelta buffer_delay) override;
+  double ProvideInput(AudioBus* audio_bus, uint32_t frames_delayed) override;
 
   // Reset the converter in response to a configuration change.
   void ResetConverter(const scoped_refptr<AudioBuffer>& input_buffer);
 
   // Perform conversion if we have enough data.
   void ConvertIfPossible();
 
   // Flush remaining output
   void Flush();
 
@@ skipping 33 matching lines @@
   // full AudioBuses in ProvideInput()?
   bool is_flushing_;
 
   // The AudioConverter which does the real work here.
   std::unique_ptr<AudioConverter> audio_converter_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_BUFFER_CONVERTER