Use a direct include of strings headers in chrome_frame/.

chrome_frame/test/ie_configurator.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/ie_configurator.h"
 
 #include <windows.h>
 #include <objbase.h>
 
 #include <ios>
 #include <list>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/time.h"
 #include "base/win/registry.h"
 #include "chrome_frame/chrome_tab.h"
 #include "chrome_frame/test/chrome_frame_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chrome_frame_test {
 
 namespace {
 
@@ skipping 562 matching lines @@
 void InstallIEConfigurator() {
   IEConfigurator* configurator = CreateConfigurator();
 
   if (configurator != NULL) {
     testing::UnitTest::GetInstance()->listeners().Append(
         new ConfiguratorDriver(configurator));
   }
 }
 
 }  // namespace chrome_frame_test