Use macros to define pepper interfaces

ppapi/proxy/ppb_file_chooser_proxy.h

Index: ppapi/proxy/ppb_file_chooser_proxy.h
diff --git a/ppapi/proxy/ppb_file_chooser_proxy.h b/ppapi/proxy/ppb_file_chooser_proxy.h
index 4f3bc84843a4cb4820cd07aa9ea01d998a9faee3..f1dcd958d47f8db72513fad7f6d827ea262d6df1 100644
--- a/ppapi/proxy/ppb_file_chooser_proxy.h
+++ b/ppapi/proxy/ppb_file_chooser_proxy.h
@@ -28,24 +28,19 @@ class SerializedVarReceiveInput;
 
 class PPB_FileChooser_Proxy : public InterfaceProxy {
  public:
-  PPB_FileChooser_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  PPB_FileChooser_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_FileChooser_Proxy();
 
-  static const Info* GetInfo();
-  static const Info* GetInfo0_4();
-
   static PP_Resource CreateProxyResource(
       PP_Instance instance,
       PP_FileChooserMode_Dev mode,
       const PP_Var& accept_mime_types);
 
-  const PPB_FileChooser_Dev* ppb_file_chooser_target() const {
-    return static_cast<const PPB_FileChooser_Dev*>(target_interface());
-  }
-
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  static const InterfaceID kInterfaceID = INTERFACE_ID_PPB_FILE_CHOOSER;
+
  private:
   // Plugin -> host message handlers.
   void OnMsgCreate(PP_Instance instance,