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..4cc790a121600b3b18be798e2ec9d183af93af02 100644
--- a/ppapi/thunk/resource_creation_api.h
+++ b/ppapi/thunk/resource_creation_api.h
@@ -21,6 +21,7 @@
 #include "ppapi/c/private/pp_private_font_charset.h"
 #include "ppapi/c/private/ppb_network_monitor_private.h"
 #include "ppapi/shared_impl/api_id.h"
+#include "ppapi/shared_impl/ppb_image_data_shared.h"
 
 struct PP_Flash_Menu;
 struct PP_FontDescription_Dev;
@@ -128,13 +129,10 @@ class ResourceCreationAPI {
                                           const int32_t* attrib_list) = 0;
   virtual PP_Resource CreateHostResolverPrivate(PP_Instance instance) = 0;
   virtual PP_Resource CreateImageData(PP_Instance instance,
+                                      PPB_ImageData_Shared::ImageDataType type,
                                       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 CreateNetworkMonitor(
       PP_Instance instance,
       PPB_NetworkMonitor_Callback callback,