Convert //extensions/browser/api from scoped_ptr to std::unique_ptr

extensions/browser/api/webcam_private/visca_webcam.h

 // Copyright 2015 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 EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_VISCA_WEBCAM_H_
 #define EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_VISCA_WEBCAM_H_
 
 #include <deque>
 
 #include "base/callback.h"
@@ skipping 96 matching lines @@
                        const SetPTZCompleteCallback& callback) override;
   void SetTiltDirection(TiltDirection direction,
                         int tilt_speed,
                         const SetPTZCompleteCallback& callback) override;
   void Reset(bool pan,
              bool tilt,
              bool zoom,
              const SetPTZCompleteCallback& callback) override;
 
   // Used only in unit tests in place of Open().
-  void OpenForTesting(scoped_ptr<SerialConnection> serial_connection);
+  void OpenForTesting(std::unique_ptr<SerialConnection> serial_connection);
 
   // Used only in unit tests to retrieve |serial_connection_| since this class
   // owns it.
   SerialConnection* GetSerialConnectionForTesting();
 
-  scoped_ptr<SerialConnection> serial_connection_;
+  std::unique_ptr<SerialConnection> serial_connection_;
 
   // Stores the response for the current command.
   std::vector<char> data_buffer_;
 
   // Queues commands till the current command completes.
   std::deque<std::pair<std::vector<char>, CommandCompleteCallback>> commands_;
 
   // Visca webcam always get/set pan-tilt together. |pan| and |tilt| are used to
   // store the current value of pan and tilt positions.
   int pan_;
   int tilt_;
 
   base::WeakPtrFactory<ViscaWebcam> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ViscaWebcam);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_VISCA_WEBCAM_H_