PPAPI: Make blocking completion callbacks work.

webkit/plugins/ppapi/ppb_file_ref_impl.h

Index: webkit/plugins/ppapi/ppb_file_ref_impl.h
diff --git a/webkit/plugins/ppapi/ppb_file_ref_impl.h b/webkit/plugins/ppapi/ppb_file_ref_impl.h
index c9b1dbf9cd9c6992469f595e0f30454c6109fad0..b75bc41999cecbeb0ca703e55d4ab30edfa7607c 100644
--- a/webkit/plugins/ppapi/ppb_file_ref_impl.h
+++ b/webkit/plugins/ppapi/ppb_file_ref_impl.h
@@ -39,13 +39,13 @@ class PPB_FileRef_Impl : public ::ppapi::PPB_FileRef_Shared {
   // PPB_FileRef_API implementation (not provided by PPB_FileRef_Shared).
   virtual PP_Resource GetParent() OVERRIDE;
   virtual int32_t MakeDirectory(PP_Bool make_ancestors,
-                                PP_CompletionCallback callback) OVERRIDE;
+                                ::ppapi::ApiCallbackType callback) OVERRIDE;
   virtual int32_t Touch(PP_Time last_access_time,
                         PP_Time last_modified_time,
-                        PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t Delete(PP_CompletionCallback callback) OVERRIDE;
+                        ::ppapi::ApiCallbackType callback) OVERRIDE;
+  virtual int32_t Delete(::ppapi::ApiCallbackType callback) OVERRIDE;
   virtual int32_t Rename(PP_Resource new_file_ref,
-                         PP_CompletionCallback callback) OVERRIDE;
+                         ::ppapi::ApiCallbackType callback) OVERRIDE;
   virtual PP_Var GetAbsolutePath();
 
   PPB_FileSystem_Impl* file_system() const { return file_system_.get(); }