Introduce subclass wrappers for STL containers that make them a lot easier

src/compiler/graph.h

 // Copyright 2013 the V8 project 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 V8_COMPILER_GRAPH_H_
 #define V8_COMPILER_GRAPH_H_
 
 #include <map>
 #include <set>
 
@@ skipping 54 matching lines @@
   void VisitNodeUsesFromStart(Visitor* visitor);
 
   template <class Visitor>
   void VisitNodeInputsFromEnd(Visitor* visitor);
 
   void AddDecorator(GraphDecorator* decorator) {
     decorators_.push_back(decorator);
   }
 
   void RemoveDecorator(GraphDecorator* decorator) {
-    DecoratorVector::iterator it =
+    ZoneVector<GraphDecorator*>::iterator it =
         std::find(decorators_.begin(), decorators_.end(), decorator);
     DCHECK(it != decorators_.end());
     decorators_.erase(it, it + 1);
   }
 
  private:
-  typedef std::vector<GraphDecorator*, zone_allocator<GraphDecorator*> >
-      DecoratorVector;
-  DecoratorVector decorators_;
+  ZoneVector<GraphDecorator*> decorators_;
 };
 
 
 class GraphDecorator : public ZoneObject {
  public:
   virtual ~GraphDecorator() {}
   virtual void Decorate(Node* node) = 0;
 };
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_GRAPH_H_