Move the bits of Prefs where production code has only trivially easy

base/prefs/pref_value_map.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_PREFS_PREF_VALUE_MAP_H_
-#define CHROME_BROWSER_PREFS_PREF_VALUE_MAP_H_
+#ifndef BASE_PREFS_PREF_VALUE_MAP_H_
+#define BASE_PREFS_PREF_VALUE_MAP_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 
 namespace base {
 class Value;
 }
@@ skipping 60 matching lines @@
                         std::vector<std::string>* differing_keys) const;
 
  private:
   typedef std::map<std::string, base::Value*> Map;
 
   Map prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefValueMap);
 };
 
-#endif  // CHROME_BROWSER_PREFS_PREF_VALUE_MAP_H_
+#endif  // BASE_PREFS_PREF_VALUE_MAP_H_