Unify and provide one IsGarbageCollectedType<T> implementation.

third_party/WebKit/Source/platform/heap/HeapTerminatedArray.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 HeapTerminatedArray_h
 #define HeapTerminatedArray_h
 
 #include "platform/heap/Heap.h"
 #include "wtf/TerminatedArray.h"
 #include "wtf/TerminatedArrayBuilder.h"
 
 namespace blink {
 
 template<typename T>
 class HeapTerminatedArray : public TerminatedArray<T> {
     DISALLOW_NEW();
+    IS_GARBAGE_COLLECTED_TYPE();
 public:
     using TerminatedArray<T>::begin;
     using TerminatedArray<T>::end;
 
     DEFINE_INLINE_TRACE()
     {
         for (typename TerminatedArray<T>::iterator it = begin(); it != end(); ++it)
             visitor->trace(*it);
     }
 
@@ skipping 30 matching lines @@
 
 template<typename T>
 class TraceEagerlyTrait<HeapTerminatedArray<T>> {
 public:
     static const bool value = TraceEagerlyTrait<T>::value;
 };
 
 } // namespace blink
 
 #endif // HeapTerminatedArray_h