cc: Make OutputSurfaceFrame::sub_buffer_rect optional

services/ui/surfaces/display_output_surface_ozone.cc

Index: services/ui/surfaces/display_output_surface_ozone.cc
diff --git a/services/ui/surfaces/display_output_surface_ozone.cc b/services/ui/surfaces/display_output_surface_ozone.cc
index ea218b2d8f7078b498ab3f57c7990d2530058878..6701a570e2a255167da397aa0012d3eb824c8b20 100644
--- a/services/ui/surfaces/display_output_surface_ozone.cc
+++ b/services/ui/surfaces/display_output_surface_ozone.cc
@@ -83,7 +83,11 @@ void DisplayOutputSurfaceOzone::SwapBuffers(cc::OutputSurfaceFrame frame) {
   DCHECK(reshape_size_ == frame.size);
   swap_size_ = reshape_size_;
 
-  buffer_queue_->SwapBuffers(frame.sub_buffer_rect);
+  gfx::Rect damage(swap_size_);
+  if (frame.sub_buffer_rect) {

[danakj, 2017/02/22 00:36:57]

no {}

+    damage = *frame.sub_buffer_rect;
+  }
+  buffer_queue_->SwapBuffers(damage);

[danakj, 2017/02/22 00:36:57]

?: maybe here also?

[halliwell, 2017/02/22 14:19:28]

Done.

   DisplayOutputSurface::SwapBuffers(std::move(frame));
 }