Index: ui/compositor/compositor.cc |
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc |
index 5c8c4b9193102e8bd6e420e0e061982404f491d6..c859ce69202e52fc9949d11dc54dfbdc9f6988d3 100644 |
--- a/ui/compositor/compositor.cc |
+++ b/ui/compositor/compositor.cc |
@@ -114,6 +114,9 @@ Compositor::Compositor(ui::ContextFactory* context_factory, |
settings.renderer_settings.delay_releasing_overlay_resources = true; |
#endif |
+ // Partial swap is always enabled for UI. |
+ settings.enable_partial_raster = true; |
+ |
// These flags should be mirrored by renderer versions in content/renderer/. |
settings.initial_debug_state.show_debug_borders = |
command_line->HasSwitch(cc::switches::kUIShowCompositedLayerBorders); |