Add base:: to string16s in chrome/.

chrome/utility/importer/ie_importer_win.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_UTILITY_IMPORTER_IE_IMPORTER_WIN_H_
 #define CHROME_UTILITY_IMPORTER_IE_IMPORTER_WIN_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 14 matching lines @@
   virtual void StartImport(const importer::SourceProfile& source_profile,
                            uint16 items,
                            ImporterBridge* bridge) OVERRIDE;
 
  private:
   typedef std::vector<ImportedBookmarkEntry> BookmarkVector;
 
   // A struct that hosts the information of IE Favorite folder.
   struct FavoritesInfo {
     base::FilePath path;
-    string16 links_folder;
+    base::string16 links_folder;
   };
 
   // IE PStore subkey GUID: AutoComplete password & form data.
   static const GUID kPStoreAutocompleteGUID;
 
   // A fake GUID for unit test.
   static const GUID kUnittestGUID;
 
   FRIEND_TEST_ALL_PREFIXES(ImporterTest, IEImporter);
 
@@ skipping 32 matching lines @@
   int CurrentIEVersion() const;
 
   // IE does not have source path. It's used in unit tests only for providing a
   // fake source.
   base::FilePath source_path_;
 
   DISALLOW_COPY_AND_ASSIGN(IEImporter);
 };
 
 #endif  // CHROME_UTILITY_IMPORTER_IE_IMPORTER_WIN_H_