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

sync/syncable/directory.cc

 // Copyright 2013 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/syncable/directory.h"
 
 #include "base/base64.h"
 #include "base/debug/trace_event.h"
 #include "base/stl_util.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "sync/internal_api/public/base/unique_position.h"
 #include "sync/internal_api/public/util/unrecoverable_error_handler.h"
 #include "sync/syncable/entry.h"
 #include "sync/syncable/entry_kernel.h"
 #include "sync/syncable/in_memory_directory_backing_store.h"
 #include "sync/syncable/on_disk_directory_backing_store.h"
 #include "sync/syncable/scoped_kernel_lock.h"
 #include "sync/syncable/scoped_parent_child_index_updater.h"
 #include "sync/syncable/syncable-inl.h"
 #include "sync/syncable/syncable_base_transaction.h"
@@ skipping 1265 matching lines @@
 
   for (OrderedChildSet::const_iterator i = children->begin();
        i != children->end(); ++i) {
     DCHECK_EQ(parent_id, (*i)->ref(PARENT_ID));
     result->push_back((*i)->ref(META_HANDLE));
   }
 }
 
 }  // namespace syncable
 }  // namespace syncer