Replace AudioDecoderConfig with simple accessors on AudioDecoder.

media/audio/audio_parameters.cc

 // Copyright (c) 2011 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.
 
 #include "media/audio/audio_parameters.h"
 
 #include "media/base/limits.h"
 
 AudioParameters::AudioParameters()
     : format(AUDIO_PCM_LINEAR),
       channel_layout(CHANNEL_LAYOUT_NONE),
       sample_rate(0),
       bits_per_sample(0),
       samples_per_packet(0),
       channels(0) {
 }
 
-AudioParameters::AudioParameters(const media::AudioDecoderConfig& config)
-    : format(AUDIO_PCM_LINEAR),
-      channel_layout(config.channel_layout),
-      sample_rate(config.sample_rate),
-      bits_per_sample(config.bits_per_channel),
-      samples_per_packet(0),
-      channels(ChannelLayoutToChannelCount(config.channel_layout)) {
-}
-
 AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
                                  int sample_rate, int bits_per_sample,
                                  int samples_per_packet)
     : format(format),
       channel_layout(channel_layout),
       sample_rate(sample_rate),
       bits_per_sample(bits_per_sample),
       samples_per_packet(samples_per_packet),
       channels(ChannelLayoutToChannelCount(channel_layout)) {
 }
@@ skipping 30 matching lines @@
   if (a.sample_rate < b.sample_rate)
     return true;
   if (a.sample_rate > b.sample_rate)
     return false;
   if (a.bits_per_sample < b.bits_per_sample)
     return true;
   if (a.bits_per_sample > b.bits_per_sample)
     return false;
   return a.samples_per_packet < b.samples_per_packet;
 }