Index: cc/trees/layer_tree_impl.h |
diff --git a/cc/trees/layer_tree_impl.h b/cc/trees/layer_tree_impl.h |
index 00e8d8963ca522ae37e6d389383d156ed592d136..46390be2e86f3168ee56b87cb8630c70134530e3 100644 |
--- a/cc/trees/layer_tree_impl.h |
+++ b/cc/trees/layer_tree_impl.h |
@@ -220,6 +220,7 @@ class CC_EXPORT LayerTreeImpl { |
void set_ui_resource_request_queue(const UIResourceRequestQueue& queue); |
const LayerImplList& RenderSurfaceLayerList() const; |
+ const Region& UnoccludedScreenSpaceRegion() const; |
// These return the size of the root scrollable area and the size of |
// the user-visible scrolling viewport, in CSS layout coordinates. |
@@ -381,6 +382,9 @@ class CC_EXPORT LayerTreeImpl { |
// List of visible layers for the most recently prepared frame. |
LayerImplList render_surface_layer_list_; |
+ // After drawing the |render_surface_layer_list_| the areas in this region |
+ // would not be fully covered by opaque content. |
+ Region unoccluded_screen_space_region_; |
bool contents_textures_purged_; |
bool viewport_size_invalid_; |