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

content/renderer/media/webrtc_audio_capturer.cc

Index: content/renderer/media/webrtc_audio_capturer.cc
===================================================================
--- content/renderer/media/webrtc_audio_capturer.cc	(revision 189875)
+++ content/renderer/media/webrtc_audio_capturer.cc	(working copy)
@@ -85,9 +85,9 @@
 
     // bits_per_sample is always 16 for now.
     int bits_per_sample = 16;
-    int channels = ChannelLayoutToChannelCount(channel_layout);
-    params_.Reset(format, channel_layout, channels, 0,
-        sample_rate, bits_per_sample, buffer_size);
+
+    params_.Reset(format, channel_layout, 0, sample_rate, bits_per_sample,
+                  buffer_size);
     buffer_.reset(new int16[params_.frames_per_buffer() * params_.channels()]);
 
     return true;