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

sql/meta_table.cc

 // 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.
 
 #include "sql/meta_table.h"
 
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "sql/connection.h"
 #include "sql/statement.h"
 #include "sql/transaction.h"
 
 namespace sql {
 
 // Key used in our meta table for version numbers.
 static const char kVersionKey[] = "version";
 static const char kCompatibleVersionKey[] = "last_compatible_version";
 
@@ skipping 127 matching lines @@
 
 bool MetaTable::PrepareGetStatement(Statement* statement, const char* key) {
   DCHECK(db_ && statement);
   statement->Assign(db_->GetCachedStatement(SQL_FROM_HERE,
       "SELECT value FROM meta WHERE key=?"));
   statement->BindCString(0, key);
   return statement->Step();
 }
 
 }  // namespace sql