Add base:: to string16s in chrome/.

chrome/utility/importer/safari_importer.h

Index: chrome/utility/importer/safari_importer.h
diff --git a/chrome/utility/importer/safari_importer.h b/chrome/utility/importer/safari_importer.h
index ea64284105a873f7e5707cbf79772f85771430f6..756dac9c78f038da184ec9b15333e99c1100fa30 100644
--- a/chrome/utility/importer/safari_importer.h
+++ b/chrome/utility/importer/safari_importer.h
@@ -61,7 +61,7 @@ class SafariImporter : public Importer {
   void ImportHistory();
 
   // Parse Safari's stored bookmarks.
-  void ParseBookmarks(const string16& toolbar_name,
+  void ParseBookmarks(const base::string16& toolbar_name,
                       std::vector<ImportedBookmarkEntry>* bookmarks);
 
   // Function to recursively read Bookmarks out of Safari plist.
@@ -71,9 +71,9 @@ class SafariImporter : public Importer {
   // |out_bookmarks| BookMark element array to write into.
   void RecursiveReadBookmarksFolder(
       NSDictionary* bookmark_folder,
-      const std::vector<string16>& parent_path_elements,
+      const std::vector<base::string16>& parent_path_elements,
       bool is_in_toolbar,
-      const string16& toolbar_name,
+      const base::string16& toolbar_name,
       std::vector<ImportedBookmarkEntry>* out_bookmarks);
 
   // Converts history time stored by Safari as a double serialized as a string,