Use a direct include of strings headers in chrome_frame/.

chrome_frame/test/chrome_frame_ui_test_utils.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_frame/test/chrome_frame_ui_test_utils.h"
 
 #include <windows.h>
 
 #include <sstream>
 #include <stack>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_bstr.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome_frame/test/win_event_receiver.h"
 #include "chrome_frame/utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/iaccessible2/ia2_api_all.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 
@@ skipping 711 matching lines @@
   return desk;
 }
 
 base::FilePath GetIAccessible2ProxyStubPath() {
   base::FilePath path;
   PathService::Get(chrome::DIR_APP, &path);
   return path.AppendASCII("IAccessible2Proxy.dll");
 }
 
 }  // namespace chrome_frame_test