Move base/values.h into the base namespace.

chrome/browser/prerender/prerender_history.h

 // Copyright (c) 2011 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 CHROME_BROWSER_PRERENDER_PRERENDER_HISTORY_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_HISTORY_H_
 #pragma once
 
 #include <list>
 
 #include "base/threading/non_thread_safe.h"
 #include "base/time.h"
 #include "chrome/browser/prerender/prerender_final_status.h"
 #include "chrome/browser/prerender/prerender_origin.h"
 #include "googleurl/src/gurl.h"
 
+namespace base {
 class Value;
+}
 
 namespace prerender {
 
 // PrerenderHistory maintains a per-session history of prerendered pages
 // and their final dispositions. It has a fixed maximum capacity, and old
 // items in history will be removed when the capacity is reached.
 class PrerenderHistory : public base::NonThreadSafe {
  public:
   // Entry is an individual entry in the history list. It corresponds to a
   // specific prerendered page.
@@ skipping 29 matching lines @@
   explicit PrerenderHistory(size_t max_items);
   ~PrerenderHistory();
 
   // Adds |entry| to the history. If at capacity, the oldest entry is dropped.
   void AddEntry(const Entry& entry);
 
   // Deletes all history entries.
   void Clear();
 
   // Retrieves the entries as a value which can be displayed.
-  Value* GetEntriesAsValue() const;
+  base::Value* GetEntriesAsValue() const;
 
  private:
   std::list<Entry> entries_;
   size_t max_items_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderHistory);
 };
 
 }
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_HISTORY_H_