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

sandbox/win/src/app_container.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 SANDBOX_WIN_SRC_APP_CONTAINER_H_
 #define SANDBOX_WIN_SRC_APP_CONTAINER_H_
 
 #include <windows.h>
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "sandbox/win/src/sandbox_types.h"
 
 namespace base {
 namespace win {
 class StartupInformation;
 }
 }
 
 namespace sandbox {
 
@@ skipping 35 matching lines @@
 // CreateAppContainer.
 ResultCode DeleteAppContainer(const string16& sid);
 
 // Retrieves the name associated with the provided AppContainer sid. Returns an
 // empty string if the AppContainer is not registered with the system.
 string16 LookupAppContainer(const string16& sid);
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_WIN_SRC_APP_CONTAINER_H_