Add channel_count parameter back to AudioBuffer creation methods.

media/base/audio_buffer_converter.cc

 // 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.
 
 #include "media/base/audio_buffer_converter.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "media/base/audio_buffer.h"
@@ skipping 170 matching lines @@
     // How many output frames that corresponds to:
     request_frames = chunks * audio_converter_->ChunkSize();
   }
 
   if (!request_frames)
     return;
 
   scoped_refptr<AudioBuffer> output_buffer =
       AudioBuffer::CreateBuffer(kSampleFormatPlanarF32,
                                 output_params_.channel_layout(),
+                                output_params_.channels(),
                                 output_params_.sample_rate(),
                                 request_frames);
   scoped_ptr<AudioBus> output_bus =
       AudioBus::CreateWrapper(output_buffer->channel_count());
 
   int frames_remaining = request_frames;
 
   // The AudioConverter wants requests of a fixed size, so we'll slide an
   // AudioBus of that size across the |output_buffer|.
   while (frames_remaining != 0) {
@@ skipping 35 matching lines @@
   is_flushing_ = false;
   audio_converter_->Reset();
   DCHECK_EQ(input_frames_, 0);
   DCHECK_EQ(last_input_buffer_offset_, 0);
   DCHECK_LT(buffered_input_frames_, 1.0);
   DCHECK(queued_inputs_.empty());
   buffered_input_frames_ = 0.0;
 }
 
 }  // namespace media