Use a direct include of strings headers in chrome/browser/r*-s*/.

chrome/browser/rlz/rlz.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 CHROME_BROWSER_RLZ_RLZ_H_
 #define CHROME_BROWSER_RLZ_RLZ_H_
 
 #include "build/build_config.h"
 
 #if defined(ENABLE_RLZ)
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/time.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "rlz/lib/rlz_lib.h"
 
 class Profile;
 namespace net {
 class URLRequestContextGetter;
 }
@@ skipping 195 matching lines @@
 
   // Minimum delay before sending financial ping after initialization.
   base::TimeDelta min_init_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(RLZTracker);
 };
 
 #endif  // defined(ENABLE_RLZ)
 
 #endif  // CHROME_BROWSER_RLZ_RLZ_H_