Use a direct include of strings headers in chrome/app/.

chrome/app/client_util.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 <windows.h>
 #include <shlwapi.h>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/environment.h"
 #include "base/file_version_info.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/version.h"
 #include "base/win/registry.h"
 #include "chrome/app/breakpad_win.h"
 #include "chrome/app/client_util.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_result_codes.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/env_vars.h"
 #include "chrome/installer/util/browser_distribution.h"
@@ skipping 242 matching lines @@
   }
 };
 
 MainDllLoader* MakeMainDllLoader() {
 #if defined(GOOGLE_CHROME_BUILD)
   return new ChromeDllLoader();
 #else
   return new ChromiumDllLoader();
 #endif
 }