Clean up Pepper ImageData resource class.

ppapi/thunk/resource_creation_api.h

Index: ppapi/thunk/resource_creation_api.h
diff --git a/ppapi/thunk/resource_creation_api.h b/ppapi/thunk/resource_creation_api.h
index cbe1b19a05e412b0d06b4e7e9df1d6fc8248066e..536d4c0f3b6704640aa5b0fff0f978bdf0cfd896 100644
--- a/ppapi/thunk/resource_creation_api.h
+++ b/ppapi/thunk/resource_creation_api.h
@@ -127,14 +127,14 @@ class ResourceCreationAPI {
                                           PP_Resource share_context,
                                           const int32_t* attrib_list) = 0;
   virtual PP_Resource CreateHostResolverPrivate(PP_Instance instance) = 0;
-  virtual PP_Resource CreateImageData(PP_Instance instance,
-                                      PP_ImageDataFormat format,
-                                      const PP_Size* size,
-                                      PP_Bool init_to_zero) = 0;
-  virtual PP_Resource CreateImageDataNaCl(PP_Instance instance,
-                                          PP_ImageDataFormat format,
-                                          const PP_Size* size,
-                                          PP_Bool init_to_zero) = 0;
+  virtual PP_Resource CreateImageDataPlatform(PP_Instance instance,
+                                              PP_ImageDataFormat format,
+                                              const PP_Size* size,
+                                              PP_Bool init_to_zero) = 0;
+  virtual PP_Resource CreateImageDataSimple(PP_Instance instance,
+                                            PP_ImageDataFormat format,
+                                            const PP_Size* size,
+                                            PP_Bool init_to_zero) = 0;
   virtual PP_Resource CreateNetworkMonitor(
       PP_Instance instance,
       PPB_NetworkMonitor_Callback callback,