Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/timing/PerformanceNavigation.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "core/CoreExport.h"
 #include "core/frame/DOMWindowProperty.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class LocalFrame;
 
 class CORE_EXPORT PerformanceNavigation final : public GarbageCollectedFinalized<PerformanceNavigation>, public ScriptWrappable, public DOMWindowProperty {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PerformanceNavigation);
+    USING_GARBAGE_COLLECTED_MIXIN(PerformanceNavigation);
 public:
     static PerformanceNavigation* create(LocalFrame* frame)
     {
         return new PerformanceNavigation(frame);
     }
 
     enum PerformanceNavigationType {
         TYPE_NAVIGATE,
         TYPE_RELOAD,
         TYPE_BACK_FORWARD,
         TYPE_RESERVED = 255
     };
 
     unsigned short type() const;
     unsigned short redirectCount() const;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit PerformanceNavigation(LocalFrame*);
 };
 
 } // namespace blink
 
 #endif // PerformanceNavigation_h