bindings: Retires ScriptWrappable::init, etc.

Source/core/xml/XMLHttpRequestProgressEvent.h

Index: Source/core/xml/XMLHttpRequestProgressEvent.h
diff --git a/Source/core/xml/XMLHttpRequestProgressEvent.h b/Source/core/xml/XMLHttpRequestProgressEvent.h
index 95059cfc509a12fb42fce6086a9e0a9ced2b3030..615c69946981384bc517393ba73d150ffc7ed61c 100644
--- a/Source/core/xml/XMLHttpRequestProgressEvent.h
+++ b/Source/core/xml/XMLHttpRequestProgressEvent.h
@@ -52,16 +52,10 @@ public:
     virtual void trace(Visitor* visitor) OVERRIDE { ProgressEvent::trace(visitor); }
 
 private:
-    XMLHttpRequestProgressEvent()
-    {
-        ScriptWrappable::init(this);
-    }
+    XMLHttpRequestProgressEvent() { }
 
     XMLHttpRequestProgressEvent(const AtomicString& type, bool lengthComputable, unsigned long long loaded, unsigned long long total)
-        : ProgressEvent(type, lengthComputable, loaded, total)
-    {
-        ScriptWrappable::init(this);
-    }
+        : ProgressEvent(type, lengthComputable, loaded, total) { }
 };
 
 } // namespace blink