Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/events/keyboard_driven_event_rewriter.h

 // Copyright 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 CHROME_BROWSER_CHROMEOS_EVENTS_KEYBOARD_DRIVEN_EVENT_REWRITER_H_
 #define CHROME_BROWSER_CHROMEOS_EVENTS_KEYBOARD_DRIVEN_EVENT_REWRITER_H_
 
 #include "base/macros.h"
 #include "ui/events/event_rewriter.h"
 
 namespace chromeos {
 
 // KeyboardDrivenEventRewriter removes the modifier flags from
 // Shift+<Arrow keys|Enter|F6> key events. This mapping only happens
 // on login screen and only when the keyboard driven oobe is enabled.
 class KeyboardDrivenEventRewriter : public ui::EventRewriter {
  public:
   KeyboardDrivenEventRewriter();
   ~KeyboardDrivenEventRewriter() override;
 
   // Calls Rewrite for testing.
-  ui::EventRewriteStatus RewriteForTesting(const ui::Event& event,
-                                           scoped_ptr<ui::Event>* new_event);
+  ui::EventRewriteStatus RewriteForTesting(
+      const ui::Event& event,
+      std::unique_ptr<ui::Event>* new_event);
 
   // EventRewriter overrides:
   ui::EventRewriteStatus RewriteEvent(
       const ui::Event& event,
-      scoped_ptr<ui::Event>* new_event) override;
+      std::unique_ptr<ui::Event>* new_event) override;
   ui::EventRewriteStatus NextDispatchEvent(
       const ui::Event& last_event,
-      scoped_ptr<ui::Event>* new_event) override;
+      std::unique_ptr<ui::Event>* new_event) override;
 
  private:
   ui::EventRewriteStatus Rewrite(const ui::Event& event,
-                                 scoped_ptr<ui::Event>* new_event);
+                                 std::unique_ptr<ui::Event>* new_event);
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardDrivenEventRewriter);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_EVENTS_KEYBOARD_DRIVEN_EVENT_REWRITER_H_