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

base/prefs/pref_store.h

 // Copyright (c) 2012 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_COMMON_PREF_STORE_H_
-#define CHROME_COMMON_PREF_STORE_H_
+#ifndef BASE_PREFS_PREF_STORE_H_
+#define BASE_PREFS_PREF_STORE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 
 namespace base {
 class Value;
 }
 
@@ skipping 45 matching lines @@
                               const base::Value** result) const = 0;
 
  protected:
   friend class base::RefCounted<PrefStore>;
   virtual ~PrefStore() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PrefStore);
 };
 
-#endif  // CHROME_COMMON_PREF_STORE_H_
+#endif  // BASE_PREFS_PREF_STORE_H_