Revert 157524 - Pass through small buffer sizes without FIFO on Linux.

media/audio/linux/audio_manager_linux.cc

Index: media/audio/linux/audio_manager_linux.cc
===================================================================
--- media/audio/linux/audio_manager_linux.cc	(revision 157531)
+++ media/audio/linux/audio_manager_linux.cc	(working copy)
@@ -10,9 +10,7 @@
 #include "base/nix/xdg_util.h"
 #include "base/process_util.h"
 #include "base/stl_util.h"
-#include "media/audio/audio_parameters.h"
 #include "media/audio/audio_output_dispatcher.h"
-#include "media/audio/audio_util.h"
 #include "media/audio/linux/alsa_input.h"
 #include "media/audio/linux/alsa_output.h"
 #include "media/audio/linux/alsa_wrapper.h"
@@ -344,22 +342,4 @@
   return new AudioManagerLinux();
 }
 
-AudioParameters AudioManagerLinux::GetPreferredLowLatencyOutputStreamParameters(
-    const AudioParameters& input_params) {
-  // Since Linux doesn't actually have a low latency path the hardware buffer
-  // size is quite large in order to prevent glitches with general usage.  Some
-  // clients, such as WebRTC, have a more limited use case and work acceptably
-  // with a smaller buffer size.  The check below allows clients which want to
-  // try a smaller buffer size on Linux to do so.
-  int buffer_size = std::min(
-      static_cast<size_t>(input_params.frames_per_buffer()),
-      GetAudioHardwareBufferSize());
-
-  // TODO(dalecurtis): This should include bits per channel and channel layout
-  // eventually.
-  return AudioParameters(
-      AudioParameters::AUDIO_PCM_LOW_LATENCY, input_params.channel_layout(),
-      GetAudioHardwareSampleRate(), 16, buffer_size);
-}
-
 }  // namespace media