blink: Cleanup class forward declarations

third_party/WebKit/Source/platform/heap/TraceTraits.h

 // Copyright 2015 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 TraceTraits_h
 #define TraceTraits_h
 
 #include "platform/heap/GCInfo.h"
 #include "platform/heap/Heap.h"
 #include "platform/heap/InlinedGlobalMarkingVisitor.h"
@@ skipping 13 matching lines @@
 
 namespace blink {
 
 template <typename T>
 class CrossThreadPersistent;
 template <typename T>
 class CrossThreadWeakPersistent;
 template <typename T>
 class Member;
 template <typename T>
+class TraceEagerlyTrait;
+template <typename T>
 class TraceTrait;
 template <typename T>
 class WeakMember;
 template <typename T>
 class WeakPersistent;
 
 template <typename T, bool = NeedsAdjustAndMark<T>::value>
 class AdjustAndMarkTrait;
 
 template <typename T>
@@ skipping 714 matching lines @@
     // since iterating over the hash table backing will find the whole
     // chain.
     visitor->markNoTracing(node);
     return false;
   }
 };
 
 }  // namespace WTF
 
 #endif