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

chrome/browser/shell_integration.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 "chrome/browser/shell_integration.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_service.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_restrictions.h"
 #include "chrome/browser/policy/policy_path_parser.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/chromeos_switches.h"
@@ skipping 273 matching lines @@
         result = ShellIntegration::SetAsDefaultProtocolClientInteractive(
             protocol_);
       }
       break;
     default:
       NOTREACHED();
   }
 
   return result;
 }