Roll Chrome into Mojo.

tools/clang/blink_gc_plugin/tests/trace_templated_super.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 TRACE_TEMPLATED_SUPER_H_
 #define TRACE_TEMPLATED_SUPER_H_
 
 #include "heap/stubs.h"
 
 namespace blink {
 
 class HeapObject;
 
 class Mixin : public GarbageCollectedMixin {
 public:
-    virtual void trace(Visitor*) { }
+    virtual void trace(Visitor*) override { }
 };
 
 template<typename T>
 class Super : public GarbageCollected<Super<T> >, public Mixin {
     USING_GARBAGE_COLLECTED_MIXIN(Super);
 public:
-    virtual void trace(Visitor*);
+    virtual void trace(Visitor*) override;
     void clearWeakMembers(Visitor*);
 private:
     Member<HeapObject> m_obj;
     WeakMember<HeapObject> m_weak;
 };
 
 template<typename T>
 class Sub : public Super<T> {
 public:
-    virtual void trace(Visitor* visitor);
+    virtual void trace(Visitor* visitor) override;
 private:
     Member<HeapObject> m_obj;
 };
 
 class HeapObject : public Sub<HeapObject> {
 public:
-    virtual void trace(Visitor*);
+    virtual void trace(Visitor*) override;
 private:
     Member<HeapObject> m_obj;
 };
 
 }
 
 #endif