DirectX based screen capturer logic

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..e3f7bcefe3ccf495a9c0d04c1e4cc55152870cda 100644
--- a/webrtc/modules/desktop_capture/desktop_geometry.h
+++ b/webrtc/modules/desktop_capture/desktop_geometry.h
@@ -124,6 +124,10 @@ class DesktopRect {
   // Finds intersection with |rect|.
   void IntersectWith(const DesktopRect& rect);
 
+  // Expands current rectangle by |padding| pixels larger in each direction.
+  // Using a negative padding to shrink.
+  void Expand(int padding);
+
   // Adds (dx, dy) to the position of the rectangle.
   void Translate(int32_t dx, int32_t dy);
   void Translate(DesktopVector d) { Translate(d.x(), d.y()); };
@@ -142,4 +146,3 @@ class DesktopRect {
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_GEOMETRY_H_
-