[WebRTC] A real ScreenCapturer test

webrtc/modules/desktop_capture/desktop_geometry.h

Index: webrtc/modules/desktop_capture/desktop_geometry.h
diff --git a/webrtc/modules/desktop_capture/desktop_geometry.h b/webrtc/modules/desktop_capture/desktop_geometry.h
index 047eeec3d9c8fd89c13f29347a0a67b77b2096da..f24afe8e24b1352dcb2bed3550bbdb36396dd834 100644
--- a/webrtc/modules/desktop_capture/desktop_geometry.h
+++ b/webrtc/modules/desktop_capture/desktop_geometry.h
@@ -91,6 +91,11 @@ class DesktopRect {
                               int32_t right, int32_t bottom) {
     return DesktopRect(left, top, right, bottom);
   }
+  static DesktopRect MakeLTRB(DesktopVector top_left,
+                              DesktopVector right_bottom) {
+    return DesktopRect(top_left.x(), top_left.y(), right_bottom.x(),
+                       right_bottom.y());
+  }
   static DesktopRect MakeOriginSize(const DesktopVector& origin,
                                     const DesktopSize& size) {
     return MakeXYWH(origin.x(), origin.y(), size.width(), size.height());