[DesktopCapture] Detect screen resolution changes in DirectX capturer

webrtc/modules/desktop_capture/win/dxgi_texture_mapping.h

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_
 #define WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_
 
 #include <D3D11.h>
 #include <DXGI1_2.h>
 
 #include "webrtc/modules/desktop_capture/desktop_geometry.h"
 #include "webrtc/modules/desktop_capture/desktop_region.h"
 #include "webrtc/modules/desktop_capture/win/dxgi_texture.h"
 
 namespace webrtc {
 
 // A DxgiTexture which directly maps bitmap from IDXGIResource. This class is
 // used when DXGI_OUTDUPL_DESC.DesktopImageInSystemMemory is true. (This usually
 // means the video card shares main memory with CPU, instead of having its own
 // individual memory.)
 class DxgiTextureMapping : public DxgiTexture {
  public:
   // Creates a DxgiTextureMapping instance. Caller must maintain the lifetime
-  // of input duplication to make sure it outlives this instance.
-  DxgiTextureMapping(const DesktopSize& desktop_size,
-                     IDXGIOutputDuplication* duplication);
+  // of input |duplication| to make sure it outlives this instance.
+  explicit DxgiTextureMapping(IDXGIOutputDuplication* duplication);
 
   ~DxgiTextureMapping() override;
 
-  bool CopyFrom(const DXGI_OUTDUPL_FRAME_INFO& frame_info,
-                IDXGIResource* resource) override;
+ protected:
+  bool CopyFromTexture(const DXGI_OUTDUPL_FRAME_INFO& frame_info,
+                       ID3D11Texture2D* texture) override;
 
   bool DoRelease() override;
 
  private:
   IDXGIOutputDuplication* const duplication_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_