Remove deprecated QTKit Video Capture Support

media/capture/device_monitor_mac.h

 // Copyright (c) 2012 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 MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_
 #define MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_
 
 #include "base/macros.h"
 #include "base/system_monitor/system_monitor.h"
 #include "base/threading/thread_checker.h"
@@ skipping 15 matching lines @@
 
   // Registers the observers for the audio/video device removal, connection and
   // suspension. The AVFoundation library is also loaded and initialised if the
   // OS supports it. The |device_task_runner| argument represents the thread on
   // which device enumeration will occur.
   void StartMonitoring(
       const scoped_refptr<base::SingleThreadTaskRunner>& device_task_runner);
 
   // Method called by the internal DeviceMonitorMacImpl object
   // |device_monitor_impl_| when a device of type |type| has been added to or
-  // removed from the system. This code executes in the notification thread
-  // (QTKit or AVFoundation).
+  // removed from the system. This code executes in the notification thread.
   void NotifyDeviceChanged(base::SystemMonitor::DeviceType type);
 
  private:
   scoped_ptr<DeviceMonitorMacImpl> device_monitor_impl_;
 
   // |thread_checker_| is used to check that constructor and StartMonitoring()
   // are called in the correct thread, the UI thread, that also owns the object.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMonitorMac);
 };
 
 }  // namespace content
 
 #endif  // MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_