Display skips swapping if overlays draw the damage

cc/output/delegating_renderer.h

Index: cc/output/delegating_renderer.h
diff --git a/cc/output/delegating_renderer.h b/cc/output/delegating_renderer.h
index b2bc01fd2eda7ce3f2abce4c531cb9cd02f90e4e..8b4b26381c0ed4e25308c11d9bc5a2a9505731b2 100644
--- a/cc/output/delegating_renderer.h
+++ b/cc/output/delegating_renderer.h
@@ -26,11 +26,11 @@ class CC_EXPORT DelegatingRenderer : public Renderer {
 
   const RendererCapabilitiesImpl& Capabilities() const override;
 
-  void DrawFrame(RenderPassList* render_passes_in_draw_order,
-                 float device_scale_factor,
-                 const gfx::Rect& device_viewport_rect,
-                 const gfx::Rect& device_clip_rect,
-                 bool disable_picture_quad_image_filtering) override;
+  DrawFrameResult DrawFrame(RenderPassList* render_passes_in_draw_order,
+                            float device_scale_factor,
+                            const gfx::Rect& device_viewport_rect,
+                            const gfx::Rect& device_clip_rect,
+                            bool disable_picture_quad_image_filtering) override;
 
   void Finish() override {}