Use a direct include of strings headers in url/, win8/.

win8/test/ui_automation_client.h

 // Copyright (c) 2013 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 WIN8_TEST_UI_AUTOMATION_CLIENT_H_
 #define WIN8_TEST_UI_AUTOMATION_CLIENT_H_
 
 // This file contains UI automation implementation details for the
 // OpenWithDialogController. See that class for consumable entrypoints.
 
 #include <windows.h>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/memory/weak_ptr.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_checker.h"
 
 namespace win8 {
 namespace internal {
 
 // An asynchronous UI automation client that waits for the appearance of a
 // Window of a particular class and then invokes one of its children identified
 // by name.  An instance may be destroyed at any time after Begin() is invoked.
 // Any pending operation is cancelled.
@@ skipping 33 matching lines @@
   // A pointer to the context object that lives on the automation thread.
   base::WeakPtr<Context> context_;
 
   DISALLOW_COPY_AND_ASSIGN(UIAutomationClient);
 };
 
 }  // namespace internal
 }  // namespace win8
 
 #endif  // WIN8_TEST_UI_AUTOMATION_CLIENT_H_