Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/plugins/DOMPluginArray.h

 /*
     Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
     Copyright (C) 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
@@ skipping 16 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class LocalFrame;
 class PluginData;
 
 class DOMPluginArray final : public GarbageCollectedFinalized<DOMPluginArray>, public ScriptWrappable, public DOMWindowProperty {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMPluginArray);
+    USING_GARBAGE_COLLECTED_MIXIN(DOMPluginArray);
 public:
     static DOMPluginArray* create(LocalFrame* frame)
     {
         return new DOMPluginArray(frame);
     }
 
     unsigned length() const;
     DOMPlugin* item(unsigned index);
     DOMPlugin* namedItem(const AtomicString& propertyName);
 
     void refresh(bool reload);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit DOMPluginArray(LocalFrame*);
     PluginData* pluginData() const;
 };
 
 } // namespace blink
 
 #endif // DOMPluginArray_h