Fix Firefox data import for Mac....

chrome/browser/importer/firefox3_importer.h

 // Copyright (c) 2010 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_IMPORTER_FIREFOX3_IMPORTER_H_
 #define CHROME_BROWSER_IMPORTER_FIREFOX3_IMPORTER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 64 matching lines @@
 
   // Loads the favicons given in the map from the database, loads the data,
   // and converts it into FaviconUsage structures.
   void LoadFavicons(sqlite3* db,
                     const FaviconMap& favicon_map,
                     std::vector<history::ImportedFavIconUsage>* favicons);
 
   FilePath source_path_;
   FilePath app_path_;
 
-  // Stored because we can only access it from the UI thread.
+#if defined(OS_LINUX)
+  // Stored because we can only access it from the UI thread. Not usable
+  // in Mac because no access from out-of-process import.
   std::string locale_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(Firefox3Importer);
 };
 
 #endif  // CHROME_BROWSER_IMPORTER_FIREFOX3_IMPORTER_H_