Bindings: Distinguish four types of V8 GC callbacks

Source/bindings/core/v8/V8GCController.h

Index: Source/bindings/core/v8/V8GCController.h
diff --git a/Source/bindings/core/v8/V8GCController.h b/Source/bindings/core/v8/V8GCController.h
index fdf3a3f6603e02f76f1cce2bc74edb49d612e435..697015b07c713c7c900fcb4dd027423c23732d7d 100644
--- a/Source/bindings/core/v8/V8GCController.h
+++ b/Source/bindings/core/v8/V8GCController.h
@@ -45,10 +45,6 @@ class CORE_EXPORT V8GCController {
 public:
     static void gcPrologue(v8::GCType, v8::GCCallbackFlags);
     static void gcEpilogue(v8::GCType, v8::GCCallbackFlags);
-    static void minorGCPrologue(v8::Isolate*);
-    static void minorGCEpilogue(v8::Isolate*);
-    static void majorGCPrologue(v8::Isolate*, bool constructRetainedObjectInfos);
-    static void majorGCEpilogue(v8::Isolate*);
 
     static void collectGarbage(v8::Isolate*);