Revert 187936 "Pass more detailed audio hardware configuration i..."

media/base/channel_mixer.h

Index: media/base/channel_mixer.h
===================================================================
--- media/base/channel_mixer.h	(revision 189875)
+++ media/base/channel_mixer.h	(working copy)
@@ -14,7 +14,6 @@
 namespace media {
 
 class AudioBus;
-class AudioParameters;
 
 // ChannelMixer is for converting audio between channel layouts.  The conversion
 // matrix is built upon construction and used during each Transform() call.  The
@@ -24,13 +23,9 @@
 // input channels as defined in the matrix.
 class MEDIA_EXPORT ChannelMixer {
  public:
-  ChannelMixer(ChannelLayout input_layout, ChannelLayout output_layout);
-  ChannelMixer(const AudioParameters& input, const AudioParameters& output);
+  ChannelMixer(ChannelLayout input, ChannelLayout output);
   ~ChannelMixer();
 
-  void Initialize(ChannelLayout input_layout, int input_channels,
-                  ChannelLayout output_layout, int output_channels);
-
   // Transforms all channels from |input| into |output| channels.
   void Transform(const AudioBus* input, AudioBus* output);