Move host resource from the proxy to the shared_impl.

ppapi/proxy/ppb_audio_proxy.h

Index: ppapi/proxy/ppb_audio_proxy.h
diff --git a/ppapi/proxy/ppb_audio_proxy.h b/ppapi/proxy/ppb_audio_proxy.h
index e39a82dcdc04114718fb8d90a99130443317a1b9..78abbbc04243717c7f81acca76309fc7e3b120c2 100644
--- a/ppapi/proxy/ppb_audio_proxy.h
+++ b/ppapi/proxy/ppb_audio_proxy.h
@@ -22,11 +22,13 @@
 
 struct PPB_Audio;
 
+namespace ppapi {
+class HostResource;
+}
+
 namespace pp {
 namespace proxy {
 
-class HostResource;
-
 class PPB_Audio_Proxy : public InterfaceProxy {
  public:
   PPB_Audio_Proxy(Dispatcher* dispatcher, const void* target_interface);
@@ -53,18 +55,18 @@ class PPB_Audio_Proxy : public InterfaceProxy {
   void OnMsgCreate(PP_Instance instance_id,
                    int32_t sample_rate,
                    uint32_t sample_frame_count,
-                   HostResource* result);
-  void OnMsgStartOrStop(const HostResource& audio_id, bool play);
+                   ppapi::HostResource* result);
+  void OnMsgStartOrStop(const ppapi::HostResource& audio_id, bool play);
 
   // Renderer->plugin message handlers.
-  void OnMsgNotifyAudioStreamCreated(const HostResource& audio_id,
+  void OnMsgNotifyAudioStreamCreated(const ppapi::HostResource& audio_id,
                                      int32_t result_code,
                                      IPC::PlatformFileForTransit socket_handle,
                                      base::SharedMemoryHandle handle,
                                      uint32_t length);
 
   void AudioChannelConnected(int32_t result,
-                             const HostResource& resource);
+                             const ppapi::HostResource& resource);
 
   // In the renderer, this is called in response to a stream created message.
   // It will retrieve the shared memory and socket handles and place them into
@@ -75,7 +77,7 @@ class PPB_Audio_Proxy : public InterfaceProxy {
   // arguments may be written to, and others may be untouched, depending on
   // where the error occurred.
   int32_t GetAudioConnectedHandles(
-      const HostResource& resource,
+      const ppapi::HostResource& resource,
       IPC::PlatformFileForTransit* foreign_socket_handle,
       base::SharedMemoryHandle* foreign_shared_memory_handle,
       uint32_t* shared_memory_length);