DirectX based screen capturer logic

webrtc/modules/desktop_capture/desktop_capture_options.h

Index: webrtc/modules/desktop_capture/desktop_capture_options.h
diff --git a/webrtc/modules/desktop_capture/desktop_capture_options.h b/webrtc/modules/desktop_capture/desktop_capture_options.h
index 68bb5884459ea13fe569a8e0d10483091f1f0450..167c6b2a16eddd253047ecd8b335f978f078d877 100644
--- a/webrtc/modules/desktop_capture/desktop_capture_options.h
+++ b/webrtc/modules/desktop_capture/desktop_capture_options.h
@@ -83,6 +83,10 @@ class DesktopCaptureOptions {
   void set_allow_use_magnification_api(bool allow) {
     allow_use_magnification_api_ = allow;
   }
+  bool use_directx_capturer() const { return use_directx_capturer_; }
+  void set_use_directx_capturer(bool enabled) {
+    use_directx_capturer_ = enabled;
+  }
 #endif
 
  private:
@@ -98,6 +102,7 @@ class DesktopCaptureOptions {
 
 #if defined(WEBRTC_WIN)
   bool allow_use_magnification_api_;
+  bool use_directx_capturer_;
 #endif
   bool use_update_notifications_;
   bool disable_effects_;