Implementation of ppapi audio.

ppapi/proxy/resource_creation_proxy.h

Index: ppapi/proxy/resource_creation_proxy.h
===================================================================
--- ppapi/proxy/resource_creation_proxy.h	(revision 103964)
+++ ppapi/proxy/resource_creation_proxy.h	(working copy)
@@ -46,6 +46,11 @@
                                         PP_AudioSampleRate sample_rate,
                                         uint32_t sample_frame_count) OVERRIDE;
   virtual PP_Resource CreateAudioTrusted(PP_Instance instance) OVERRIDE;
+  virtual PP_Resource CreateAudioInput(PP_Instance instance,
+                                  PP_Resource config_id,
+                                  PPB_AudioInput_Callback audio_input_callback,
+                                  void* user_data) OVERRIDE;
+  virtual PP_Resource CreateAudioInputTrusted(PP_Instance instance) OVERRIDE;
   virtual PP_Resource CreateBroker(PP_Instance instance) OVERRIDE;
   virtual PP_Resource CreateBuffer(PP_Instance instance,
                                    uint32_t size) OVERRIDE;
@@ -140,6 +145,8 @@
                         int32_t sample_rate,
                         uint32_t sample_frame_count,
                         HostResource* result);
+  void OnMsgCreateAudioInput(PP_Instance instance,
+                        HostResource* result);
   void OnMsgCreateGraphics2D(PP_Instance instance,
                              const PP_Size& size,
                              PP_Bool is_always_opaque,