add audio-buffer-size command line flag support to the input audio for all the platforms

media/audio/pulse/audio_manager_pulse.h

 // Copyright 2013 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.
 
 #ifndef MEDIA_AUDIO_PULSE_AUDIO_MANAGER_PULSE_H_
 #define MEDIA_AUDIO_PULSE_AUDIO_MANAGER_PULSE_H_
 
 #include <pulse/pulseaudio.h>
 #include <string>
 
@@ skipping 11 matching lines @@
   static AudioManager* Create(AudioLogFactory* audio_log_factory);
 
   // Implementation of AudioManager.
   virtual bool HasAudioOutputDevices() OVERRIDE;
   virtual bool HasAudioInputDevices() OVERRIDE;
   virtual void ShowAudioInputSettings() OVERRIDE;
   virtual void GetAudioInputDeviceNames(
       AudioDeviceNames* device_names) OVERRIDE;
   virtual void GetAudioOutputDeviceNames(
       AudioDeviceNames* device_names) OVERRIDE;
-  virtual AudioParameters GetInputStreamParameters(
-      const std::string& device_id) OVERRIDE;
 
   // Implementation of AudioManagerBase.
   virtual AudioOutputStream* MakeLinearOutputStream(
       const AudioParameters& params) OVERRIDE;
   virtual AudioOutputStream* MakeLowLatencyOutputStream(
       const AudioParameters& params,
       const std::string& device_id) OVERRIDE;
   virtual AudioInputStream* MakeLinearInputStream(
       const AudioParameters& params, const std::string& device_id) OVERRIDE;
   virtual AudioInputStream* MakeLowLatencyInputStream(
       const AudioParameters& params, const std::string& device_id) OVERRIDE;
 
  protected:
   virtual AudioParameters GetPreferredOutputStreamParameters(
       const std::string& output_device_id,
       const AudioParameters& input_params) OVERRIDE;
+  virtual AudioParameters GetPreferredInputStreamParameters(
+      const std::string& input_device_id,
+      const AudioParameters& input_params) OVERRIDE;
 
  private:
   bool Init();
   void DestroyPulse();
 
   void GetAudioDeviceNames(bool input, media::AudioDeviceNames* device_names);
 
   // Callback to get the devices' info like names, used by GetInputDevices().
   static void InputDevicesInfoCallback(pa_context* context,
                                        const pa_source_info* info,
@@ skipping 23 matching lines @@
   pa_context* input_context_;
   AudioDeviceNames* devices_;
   int native_input_sample_rate_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerPulse);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_PULSE_AUDIO_MANAGER_PULSE_H_