Allow std::unordered_*.

components/sync_bookmarks/bookmark_model_associator.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 COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_MODEL_ASSOCIATOR_H_
 #define COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_MODEL_ASSOCIATOR_H_
 
 #include <map>
 #include <set>
 #include <stack>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/hash.h"
 #include "base/memory/weak_ptr.h"
+#include "base/strings/string16.h"
 #include "base/threading/thread_checker.h"
 #include "components/sync_driver/data_type_error_handler.h"
 #include "components/sync_driver/model_associator.h"
 #include "sync/internal_api/public/util/unrecoverable_error_handler.h"
 
 class GURL;
 
 namespace bookmarks {
 class BookmarkModel;
 class BookmarkNode;
@@ skipping 288 matching lines @@
   // guarantees no invocations can occur if |this| has been deleted. (This
   // allows this class to be non-refcounted).
   base::WeakPtrFactory<BookmarkModelAssociator> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkModelAssociator);
 };
 
 }  // namespace browser_sync
 
 #endif  // COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_MODEL_ASSOCIATOR_H_