Clean up macros around DEFINE_EVENT_TARGET_REFCOUNTING

Source/core/fileapi/FileReader.h

Index: Source/core/fileapi/FileReader.h
diff --git a/Source/core/fileapi/FileReader.h b/Source/core/fileapi/FileReader.h
index fbca658a5dd786f2b503cedd1a5e0e661e1366c9..7e81ee2207a1a8ed62f0f245df83bac6ebc7e198 100644
--- a/Source/core/fileapi/FileReader.h
+++ b/Source/core/fileapi/FileReader.h
@@ -51,7 +51,7 @@ class StringOrArrayBuffer;
 
 class CORE_EXPORT FileReader final : public RefCountedGarbageCollectedEventTargetWithInlineData<FileReader>, public ActiveDOMObject, public FileReaderLoaderClient {
     DEFINE_WRAPPERTYPEINFO();
-    DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<FileReader>);
+    REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(FileReader);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FileReader);
 public:
     static FileReader* create(ExecutionContext*);