Use macros to define pepper interfaces

ppapi/proxy/resource_creation_proxy.h

Index: ppapi/proxy/resource_creation_proxy.h
diff --git a/ppapi/proxy/resource_creation_proxy.h b/ppapi/proxy/resource_creation_proxy.h
index 0f1589b54574e7e0dbd63523af588696240986c3..1db9164a8da800f2a8d07bf3087e49185ad3b38c 100644
--- a/ppapi/proxy/resource_creation_proxy.h
+++ b/ppapi/proxy/resource_creation_proxy.h
@@ -11,8 +11,8 @@
 #include "ipc/ipc_channel.h"
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
+#include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/serialized_structs.h"
-#include "ppapi/shared_impl/function_group_base.h"
 #include "ppapi/thunk/resource_creation_api.h"
 
 struct PP_Size;
@@ -25,14 +25,16 @@ namespace proxy {
 
 class Dispatcher;
 
-class ResourceCreationProxy : public FunctionGroupBase,
-                              public thunk::ResourceCreationAPI,
-                              public IPC::Channel::Listener,
-                              public IPC::Message::Sender {
+class ResourceCreationProxy : public InterfaceProxy,
+                              public thunk::ResourceCreationAPI {
  public:
   explicit ResourceCreationProxy(Dispatcher* dispatcher);
   virtual ~ResourceCreationProxy();
 
+  // Factory function used for registration (normal code can just use the
+  // constructor).
+  static InterfaceProxy* Create(Dispatcher* dispatcher);
+
   virtual thunk::ResourceCreationAPI* AsResourceCreationAPI() OVERRIDE;
 
   // ResourceCreationAPI (called in plugin).
@@ -149,8 +151,6 @@ class ResourceCreationProxy : public FunctionGroupBase,
                             std::string* image_data_desc,
                             ImageHandle* result_image_handle);
 
-  Dispatcher* dispatcher_;
-
   DISALLOW_COPY_AND_ASSIGN(ResourceCreationProxy);
 };