Standardize usage of virtual/override/final in media/

media/video/capture/mac/video_capture_device_decklink_mac.mm

 // 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 "media/video/capture/mac/video_capture_device_decklink_mac.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 39 matching lines @@
                           media::VideoCaptureDeviceDeckLinkMac* frame_receiver);
 
   void AllocateAndStart(const media::VideoCaptureParams& params);
   void StopAndDeAllocate();
 
   // Remove the VideoCaptureDeviceDeckLinkMac's weak reference.
   void ResetVideoCaptureDeviceReference();
 
  private:
   // IDeckLinkInputCallback interface implementation.
-  virtual HRESULT VideoInputFormatChanged(
+  HRESULT VideoInputFormatChanged(
       BMDVideoInputFormatChangedEvents notification_events,
-      IDeckLinkDisplayMode *new_display_mode,
+      IDeckLinkDisplayMode* new_display_mode,
       BMDDetectedVideoInputFormatFlags detected_signal_flags) override;
-  virtual HRESULT VideoInputFrameArrived(
+  HRESULT VideoInputFrameArrived(
       IDeckLinkVideoInputFrame* video_frame,
       IDeckLinkAudioInputPacket* audio_packet) override;
 
   // IUnknown interface implementation.
-  virtual HRESULT QueryInterface(REFIID iid, void** ppv) override;
-  virtual ULONG AddRef() override;
-  virtual ULONG Release() override;
+  HRESULT QueryInterface(REFIID iid, void** ppv) override;
+  ULONG AddRef() override;
+  ULONG Release() override;
 
   // Forwarder to VideoCaptureDeviceDeckLinkMac::SendErrorString().
   void SendErrorString(const std::string& reason);
 
   // Forwarder to VideoCaptureDeviceDeckLinkMac::SendLogString().
   void SendLogString(const std::string& message);
 
   const media::VideoCaptureDevice::Name device_name_;
 
   // Protects concurrent setting and using of |frame_receiver_|.
   base::Lock lock_;
   // Weak reference to the captured frames client, used also for error messages
   // and logging. Initialized on construction and used until cleared by calling
   // ResetVideoCaptureDeviceReference().
   media::VideoCaptureDeviceDeckLinkMac* frame_receiver_;
 
   // This is used to control the video capturing device input interface.
   ScopedDeckLinkPtr<IDeckLinkInput> decklink_input_;
   // |decklink_| represents a physical device attached to the host.
   ScopedDeckLinkPtr<IDeckLink> decklink_;
 
   // Checks for Device (a.k.a. Audio) thread.
   base::ThreadChecker thread_checker_;
 
   friend class scoped_refptr<DeckLinkCaptureDelegate>;
   friend class base::RefCountedThreadSafe<DeckLinkCaptureDelegate>;
 
-  virtual ~DeckLinkCaptureDelegate();
+  ~DeckLinkCaptureDelegate() override;
 
   DISALLOW_COPY_AND_ASSIGN(DeckLinkCaptureDelegate);
 };
 
 static float GetDisplayModeFrameRate(
     const ScopedDeckLinkPtr<IDeckLinkDisplayMode>& display_mode) {
   BMDTimeValue time_value, time_scale;
   float display_mode_frame_rate = 0.0f;
   if (display_mode->GetFrameRate(&time_value, &time_scale) == S_OK &&
       time_value > 0) {
@@ skipping 364 matching lines @@
   if (decklink_capture_delegate_.get())
     decklink_capture_delegate_->AllocateAndStart(params);
 }
 
 void VideoCaptureDeviceDeckLinkMac::StopAndDeAllocate() {
   if (decklink_capture_delegate_.get())
     decklink_capture_delegate_->StopAndDeAllocate();
 }
 
 } // namespace media