Use a direct include of strings headers in rlz/, sandbox/, skia/, sql/, sync/.

sync/engine/build_commit_command.cc

 // Copyright 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.
 
 #include "sync/engine/build_commit_command.h"
 
 #include <limits>
 #include <set>
 #include <string>
 #include <vector>
 
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "sync/engine/syncer_proto_util.h"
 #include "sync/internal_api/public/base/unique_position.h"
 #include "sync/protocol/bookmark_specifics.pb.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/sessions/ordered_commit_set.h"
 #include "sync/sessions/sync_session.h"
 #include "sync/syncable/directory.h"
 #include "sync/syncable/entry.h"
 #include "sync/syncable/syncable_base_transaction.h"
 #include "sync/syncable/syncable_changes_version.h"
@@ skipping 189 matching lines @@
             sync_entry->mutable_unique_position());
       }
       SetEntrySpecifics(&meta_entry, sync_entry);
     }
   }
 
   return SYNCER_OK;
 }
 
 }  // namespace syncer