Remove references of ScreenCapturer and WindowCapturer

webrtc/modules/desktop_capture/cropping_window_capturer.h

Index: webrtc/modules/desktop_capture/cropping_window_capturer.h
diff --git a/webrtc/modules/desktop_capture/cropping_window_capturer.h b/webrtc/modules/desktop_capture/cropping_window_capturer.h
index a2c6c2ff1a3d06f577c21c70d06c7f2e85896729..7986821bc9a6129f7caa4f989cb2f330b4e02b19 100644
--- a/webrtc/modules/desktop_capture/cropping_window_capturer.h
+++ b/webrtc/modules/desktop_capture/cropping_window_capturer.h
@@ -63,8 +63,8 @@ class CroppingWindowCapturer : public WindowCapturer,
  private:
   DesktopCaptureOptions options_;
   DesktopCapturer::Callback* callback_;
-  std::unique_ptr<WindowCapturer> window_capturer_;
-  std::unique_ptr<ScreenCapturer> screen_capturer_;
+  std::unique_ptr<DesktopCapturer> window_capturer_;
+  std::unique_ptr<DesktopCapturer> screen_capturer_;
   SourceId selected_window_;
   WindowId excluded_window_;
 };