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

sync/engine/process_commit_response_command_unittest.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/process_commit_response_command.h"
 
 #include <vector>
 
 #include "base/location.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "sync/internal_api/public/test/test_entry_factory.h"
 #include "sync/protocol/bookmark_specifics.pb.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/sessions/sync_session.h"
 #include "sync/syncable/entry.h"
 #include "sync/syncable/mutable_entry.h"
 #include "sync/syncable/syncable_id.h"
 #include "sync/syncable/syncable_proto_util.h"
 #include "sync/syncable/syncable_read_transaction.h"
 #include "sync/syncable/syncable_write_transaction.h"
@@ skipping 335 matching lines @@
       }
     }
     cid = c.GetSuccessorId();
     child_count++;
   }
   ASSERT_EQ(batch_size*2, child_count)
       << "Too few or too many children in parent folder after commit.";
 }
 
 }  // namespace syncer