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

chrome/browser/chromeos/input_method/input_method_engine.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_INPUT_METHOD_INPUT_METHOD_ENGINE_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 122 matching lines @@
 
   // input_method::InputMethodEngineBase:
   void UpdateComposition(const ui::CompositionText& composition_text,
                          uint32_t cursor_pos,
                          bool is_visible) override;
   void CommitTextToInputContext(int context_id,
                                 const std::string& text) override;
   bool SendKeyEvent(ui::KeyEvent* event, const std::string& code) override;
 
   // The current candidate window.
-  scoped_ptr<ui::CandidateWindow> candidate_window_;
+  std::unique_ptr<ui::CandidateWindow> candidate_window_;
 
   // The current candidate window property.
   CandidateWindowProperty candidate_window_property_;
 
   // Indicates whether the candidate window is visible.
   bool window_visible_;
 
   // Mapping of candidate index to candidate id.
   std::vector<int> candidate_ids_;
 
   // Mapping of candidate id to index.
   std::map<int, int> candidate_indexes_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_ENGINE_H_