Mojo interfaces needed for switching audio rendering stream creation and closing from IPC to Mojo

media/audio/audio_parameters.h

 // Copyright (c) 2012 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_AUDIO_AUDIO_PARAMETERS_H_
 #define MEDIA_AUDIO_AUDIO_PARAMETERS_H_
 
 #include <stdint.h>
 #include <string>
 
@@ skipping 133 matching lines @@
   // A setter for channel_layout_ is intentionally excluded.
   ChannelLayout channel_layout() const { return channel_layout_; }
 
   // The number of channels is usually computed from channel_layout_. Setting
   // this explictly is only required with CHANNEL_LAYOUT_DISCRETE.
   void set_channels_for_discrete(int channels) {
     DCHECK(channel_layout_ == CHANNEL_LAYOUT_DISCRETE ||
            channels == ChannelLayoutToChannelCount(channel_layout_));
     channels_ = channels;
   }
+  void set_channels(int channels) { channels_ = channels; }
   int channels() const { return channels_; }
 
   void set_sample_rate(int sample_rate) { sample_rate_ = sample_rate; }
   int sample_rate() const { return sample_rate_; }
 
   void set_bits_per_sample(int bits_per_sample) {
     bits_per_sample_ = bits_per_sample;
   }
   int bits_per_sample() const { return bits_per_sample_; }
 
@@ skipping 49 matching lines @@
   if (a.sample_rate() != b.sample_rate())
     return a.sample_rate() < b.sample_rate();
   if (a.bits_per_sample() != b.bits_per_sample())
     return a.bits_per_sample() < b.bits_per_sample();
   return a.frames_per_buffer() < b.frames_per_buffer();
 }
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_PARAMETERS_H_