Index: cc/output/output_surface_frame.h |
diff --git a/cc/output/output_surface_frame.h b/cc/output/output_surface_frame.h |
index 2306f2e5b4bbe686807d324dd438eee65266d245..331496fe06ebfb7b385e259098125fce7cf49943 100644 |
--- a/cc/output/output_surface_frame.h |
+++ b/cc/output/output_surface_frame.h |
@@ -8,6 +8,7 @@ |
#include <vector> |
#include "base/macros.h" |
+#include "base/optional.h" |
#include "cc/base/cc_export.h" |
#include "ui/events/latency_info.h" |
#include "ui/gfx/geometry/rect.h" |
@@ -26,7 +27,8 @@ class CC_EXPORT OutputSurfaceFrame { |
OutputSurfaceFrame& operator=(OutputSurfaceFrame&& other); |
gfx::Size size; |
- gfx::Rect sub_buffer_rect; |
+ // Optional rect for partial or empty swap; if not provided, use regular swap. |
+ base::Optional<gfx::Rect> sub_buffer_rect; |
std::vector<ui::LatencyInfo> latency_info; |
private: |