Getting rid of AudioHardwareConfig and its synchronous IPC.

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 29625e4a049ad9d5f3e9ebfd89b88307133d92e3..f5ae6682d055945238158563dafe2c7881de0ae2 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -28,6 +28,7 @@
 #include "content/common/frame_messages.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/renderer/content_renderer_client.h"
+#include "content/renderer/media/audio_device_factory.h"
 #include "content/renderer/pepper/content_decryptor_delegate.h"
 #include "content/renderer/pepper/event_conversion.h"
 #include "content/renderer/pepper/fullscreen_container.h"
@@ -60,7 +61,6 @@
 #include "content/renderer/render_widget.h"
 #include "content/renderer/render_widget_fullscreen_pepper.h"
 #include "content/renderer/sad_plugin.h"
-#include "media/base/audio_hardware_config.h"
 #include "ppapi/c/dev/ppp_text_input_dev.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/ppb_audio_config.h"
@@ -2453,14 +2453,24 @@ PP_Var PepperPluginInstanceImpl::ExecuteScript(PP_Instance instance,
 
 uint32_t PepperPluginInstanceImpl::GetAudioHardwareOutputSampleRate(
     PP_Instance instance) {
-  RenderThreadImpl* thread = RenderThreadImpl::current();
-  return thread->GetAudioHardwareConfig()->GetOutputSampleRate();
+  return render_frame()
+             ? AudioDeviceFactory::GetOutputDeviceInfo(
+                   render_frame()->GetRoutingID(), 0 /* session_id */,
+                   std::string() /* device_id */, url::Origin(document_url()))
+                   .output_params()
+                   .sample_rate()
+             : 0;
 }
 
 uint32_t PepperPluginInstanceImpl::GetAudioHardwareOutputBufferSize(
     PP_Instance instance) {
-  RenderThreadImpl* thread = RenderThreadImpl::current();
-  return thread->GetAudioHardwareConfig()->GetOutputBufferSize();
+  return render_frame()
+             ? AudioDeviceFactory::GetOutputDeviceInfo(
+                   render_frame()->GetRoutingID(), 0 /* session_id */,
+                   std::string() /* device_id */, url::Origin(document_url()))
+                   .output_params()
+                   .frames_per_buffer()
+             : 0;
 }
 
 PP_Var PepperPluginInstanceImpl::GetDefaultCharSet(PP_Instance instance) {