Introduce AudioHardwareConfig for renderer side audio device info.

content/renderer/pepper/pepper_platform_audio_output_impl.cc

Index: content/renderer/pepper/pepper_platform_audio_output_impl.cc
diff --git a/content/renderer/pepper/pepper_platform_audio_output_impl.cc b/content/renderer/pepper/pepper_platform_audio_output_impl.cc
index 6681d0aab61387dc4f1b472bb38d7e6280ef43ab..2a6dbf6b9753ecba004bac49c71bec462c7893e4 100644
--- a/content/renderer/pepper/pepper_platform_audio_output_impl.cc
+++ b/content/renderer/pepper/pepper_platform_audio_output_impl.cc
@@ -11,9 +11,9 @@
 #include "build/build_config.h"
 #include "content/common/child_process.h"
 #include "content/common/media/audio_messages.h"
-#include "content/renderer/media/audio_hardware.h"
 #include "content/renderer/media/audio_message_filter.h"
 #include "content/renderer/render_thread_impl.h"
+#include "media/base/audio_hardware_config.h"
 #include "media/base/media_switches.h"
 
 namespace content {
@@ -125,14 +125,17 @@ bool PepperPlatformAudioOutputImpl::Initialize(
   media::AudioParameters::Format format;
   const int kMaxFramesForLowLatency = 2047;
 
+  media::AudioHardwareConfig* hardware_config =
+      RenderThreadImpl::current()->GetAudioHardwareConfig();
+
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   if (!cmd_line->HasSwitch(switches::kDisableAudioOutputResampler)) {
     // Rely on AudioOutputResampler to handle any inconsistencies between the
     // hardware params required for low latency and the requested params.
     format = media::AudioParameters::AUDIO_PCM_LOW_LATENCY;
-  } else if (sample_rate == GetAudioOutputSampleRate() &&
+  } else if (sample_rate == hardware_config->GetOutputSampleRate() &&
              frames_per_buffer <= kMaxFramesForLowLatency &&
-             frames_per_buffer % content::GetAudioOutputBufferSize() == 0) {
+             frames_per_buffer % hardware_config->GetOutputBufferSize() == 0) {
     // Use the low latency back end if the client request is compatible, and
     // the sample count is low enough to justify using AUDIO_PCM_LOW_LATENCY.
     format = media::AudioParameters::AUDIO_PCM_LOW_LATENCY;