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

chrome/browser/extensions/api/braille_display_private/mock_braille_controller.cc

 // Copyright 2014 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/browser/extensions/api/braille_display_private/mock_braille_controller.h"
 
 namespace extensions {
 namespace api {
 namespace braille_display_private {
 
 MockBrailleController::MockBrailleController()
     : available_(false), observer_(NULL) {}
 
-scoped_ptr<DisplayState> MockBrailleController::GetDisplayState() {
-  scoped_ptr<DisplayState> state(new DisplayState());
+std::unique_ptr<DisplayState> MockBrailleController::GetDisplayState() {
+  std::unique_ptr<DisplayState> state(new DisplayState());
   state->available = available_;
   if (available_)
     state->text_cell_count.reset(new int(18));
   return state;
 }
 
 void MockBrailleController::AddObserver(BrailleObserver* observer) {
   CHECK(observer_ == NULL);
   observer_ = observer;
 }
 
 void MockBrailleController::RemoveObserver(BrailleObserver* observer) {
   CHECK(observer == observer_);
   observer_ = NULL;
 }
 
 void MockBrailleController::SetAvailable(bool available) {
   available_ = available;
 }
 
 BrailleObserver* MockBrailleController::GetObserver() const {
   return observer_;
 }
 
 }  // namespace braille_display_private
 }  // namespace api
 }  // namespace extensions