Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/dom/ScopedWindowFocusAllowedIndicator.h

 // Copyright 2014 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.
 
 #ifndef ScopedWindowFocusAllowedIndicator_h
 #define ScopedWindowFocusAllowedIndicator_h
 
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/ExecutionContext.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class ScopedWindowFocusAllowedIndicator final {
     USING_FAST_MALLOC(ScopedWindowFocusAllowedIndicator);
     WTF_MAKE_NONCOPYABLE(ScopedWindowFocusAllowedIndicator);
 public:
     explicit ScopedWindowFocusAllowedIndicator(ExecutionContext* executionContext)
-        : m_observer(adoptPtrWillBeNoop(new Observer(executionContext)))
+        : m_observer(new Observer(executionContext))
     {
     }
     ~ScopedWindowFocusAllowedIndicator()
     {
         m_observer->dispose();
     }
 
 private:
-    class Observer final : public NoBaseWillBeGarbageCollectedFinalized<Observer>, public ContextLifecycleObserver {
-        WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Observer);
+    class Observer final : public GarbageCollectedFinalized<Observer>, public ContextLifecycleObserver {
+        USING_GARBAGE_COLLECTED_MIXIN(Observer);
     public:
         explicit Observer(ExecutionContext* executionContext)
             : ContextLifecycleObserver(executionContext)
         {
             if (executionContext)
                 executionContext->allowWindowInteraction();
         }
 
         void dispose()
         {
             if (getExecutionContext())
                 getExecutionContext()->consumeWindowInteraction();
         }
 
         DEFINE_INLINE_TRACE()
         {
             ContextLifecycleObserver::trace(visitor);
         }
     };
 
     // In Oilpan, destructors are not allowed to touch other on-heap objects.
     // The Observer indirection is needed to keep
     // ScopedWindowFocusAllowedIndicator off-heap and thus allows its destructor
     // to call getExecutionContext()->consumeWindowInteraction().
-    OwnPtrWillBePersistent<Observer> m_observer;
+    Persistent<Observer> m_observer;
 };
 
 } // namespace blink
 
 #endif // ScopedWindowFocusAllowedIndicator_h