Add base:: to string16 in chrome_frame/.

chrome_frame/registry_list_preferences_holder.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.
 
 // A utility class for accessing and caching registry preferences that take
 // the form of lists of strings.
 // TODO(robertshield): Use the RegistryWatcher stuff to keep this list up to
 // date.
 
 #ifndef CHROME_FRAME_REGISTRY_LIST_PREFERENCES_HOLDER_H_
@@ skipping 12 matching lines @@
   // Initializes the RegistryListPreferencesHolder using the values stored
   // under the key |list_name| stored at |registry_path| under |hive|.
   void Init(HKEY hive,
             const wchar_t* registry_path,
             const wchar_t* list_name);
 
   bool Valid() const { return valid_; }
 
   // Returns true iff |string| matches any of the strings in values_, using the
   // matching logic in base's MatchPattern().
-  bool ListMatches(const string16& string) const;
+  bool ListMatches(const base::string16& string) const;
 
   // Manually add a string to values_ for testing purposes.
-  void AddStringForTesting(const string16& string);
+  void AddStringForTesting(const base::string16& string);
 
   // Reset the holder causing it to be re-initialized, for testing purposes
   // only.
   // TODO(robertshield): Remove this once the RegistryWatcher stuff is wired up.
   void ResetForTesting();
 
  private:
-  std::vector<string16> values_;
+  std::vector<base::string16> values_;
   bool valid_;
 
   DISALLOW_COPY_AND_ASSIGN(RegistryListPreferencesHolder);
 };
 
 #endif  // CHROME_FRAME_REGISTRY_LIST_PREFERENCES_HOLDER_H_