bindings: Retires ScriptWrappable::init, etc.

Source/core/timing/PerformanceMark.h

Index: Source/core/timing/PerformanceMark.h
diff --git a/Source/core/timing/PerformanceMark.h b/Source/core/timing/PerformanceMark.h
index d1a4cc19d17b36599f73d0ef18a174f6702d9e90..793cb80007430fc5b37505bf1d0aa984155f1a66 100644
--- a/Source/core/timing/PerformanceMark.h
+++ b/Source/core/timing/PerformanceMark.h
@@ -49,10 +49,8 @@ public:
     }
 
 private:
-    PerformanceMark(const String& name, double startTime) : PerformanceEntry(name, "mark", startTime, startTime)
-    {
-        ScriptWrappable::init(this);
-    }
+    PerformanceMark(const String& name, double startTime)
+        : PerformanceEntry(name, "mark", startTime, startTime) { }
 
     virtual ~PerformanceMark() { }
 };