Replace scoped_ptr with std::unique_ptr in //media/base.

media/base/user_input_monitor.cc

 // 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.
 
 #include "media/base/user_input_monitor.h"
 
 #include "base/logging.h"
 
 namespace media {
 
 #ifdef DISABLE_USER_INPUT_MONITOR
-scoped_ptr<UserInputMonitor> UserInputMonitor::Create(
+std::unique_ptr<UserInputMonitor> UserInputMonitor::Create(
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
     const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner) {
-  return scoped_ptr<UserInputMonitor>();
+  return nullptr;
 }
 #endif  // DISABLE_USER_INPUT_MONITOR
 
 UserInputMonitor::UserInputMonitor()
     : key_press_counter_references_(0),
       mouse_listeners_count_(0),
       mouse_listeners_(new MouseListenerList()) {}
 
 UserInputMonitor::~UserInputMonitor() {
   DCHECK_EQ(0u, key_press_counter_references_);
@@ skipping 38 matching lines @@
   base::AutoLock auto_lock(lock_);
   DCHECK_NE(key_press_counter_references_, 0u);
   --key_press_counter_references_;
   if (key_press_counter_references_ == 0) {
     StopKeyboardMonitoring();
     DVLOG(2) << "Stopped keyboard monitoring.";
   }
 }
 
 }  // namespace media