Refactor WrapperTypeInfo.traceWrappers to WrapperTypeInfo.getHeader

third_party/WebKit/Source/bindings/core/v8/ActiveScriptWrappable.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/ScriptWrappableVisitor.h"
 #include "bindings/core/v8/V8PerIsolateData.h"
 
@@ skipping 13 matching lines @@
     V8PerIsolateData* isolateData = V8PerIsolateData::from(isolate);
     auto activeScriptWrappables = isolateData->activeScriptWrappables();
     if (!activeScriptWrappables) {
         return;
     }
 
     for (auto activeWrappable : *activeScriptWrappables) {
         if (!activeWrappable->hasPendingActivity())
             continue;
 
-        ScriptWrappable* wrappable = activeWrappable->toScriptWrappable();
-        wrappable->wrapperTypeInfo()->traceWrappers(visitor, wrappable);
+        activeWrappable->toScriptWrappable()->traceWrappers(visitor);
     }
 }
 
 } // namespace blink