Oilpan: Remove most WillBe types from the code base

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

 /*
     Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 
     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,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 14 matching lines @@
 #include "modules/plugins/DOMMimeType.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class PluginData;
 
 class DOMPlugin final : public GarbageCollectedFinalized<DOMPlugin>, public ScriptWrappable, public LocalFrameLifecycleObserver {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMPlugin);
+    USING_GARBAGE_COLLECTED_MIXIN(DOMPlugin);
     DEFINE_WRAPPERTYPEINFO();
 public:
     static DOMPlugin* create(PluginData* pluginData, LocalFrame* frame, unsigned index)
     {
         return new DOMPlugin(pluginData, frame, index);
     }
     virtual ~DOMPlugin();
 
     String name() const;
     String filename() const;
@@ skipping 11 matching lines @@
 
     const PluginInfo& pluginInfo() const { return m_pluginData->plugins()[m_index]; }
 
     RefPtr<PluginData> m_pluginData;
     unsigned m_index;
 };
 
 } // namespace blink
 
 #endif // DOMPlugin_h