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

src/compiler/graph-reducer.h

 // Copyright 2014 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_REDUCER_H_
 #define V8_COMPILER_GRAPH_REDUCER_H_
 
-#include <list>
-
-#include "src/zone-allocator.h"
+#include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Forward declarations.
 class Graph;
 class Node;
 
 
@@ skipping 41 matching lines @@
   Graph* graph() const { return graph_; }
 
   void AddReducer(Reducer* reducer) { reducers_.push_back(reducer); }
 
   // Reduce a single node.
   void ReduceNode(Node* node);
   // Reduce the whole graph.
   void ReduceGraph();
 
  private:
-  typedef std::list<Reducer*, zone_allocator<Reducer*> > Reducers;
-
   Graph* graph_;
-  Reducers reducers_;
+  ZoneVector<Reducer*> reducers_;
 
   DISALLOW_COPY_AND_ASSIGN(GraphReducer);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_GRAPH_REDUCER_H_