[librsvg: 2/3] Implement get_geometry_sub in terms of geometry_for_layer

[Federico Mena Quintero <federico src gnome org>]

commit a73c6e3f0ce43269481c4afb8ae6dc7f1c132639
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Oct 9 14:27:28 2020 -0500

    Implement get_geometry_sub in terms of geometry_for_layer
    
    Now the special case for getting the geometry from the intrinsic
    dimensions when possible, clearly lives in this function.

 rsvg_internals/src/handle.rs | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)
---
diff --git a/rsvg_internals/src/handle.rs b/rsvg_internals/src/handle.rs
index 9a6f78e8..12824dab 100644
--- a/rsvg_internals/src/handle.rs
+++ b/rsvg_internals/src/handle.rs
@@ -128,23 +128,7 @@ impl Handle {
             }
         }
 
-        let target = cairo::ImageSurface::create(cairo::Format::Rgb24, 1, 1)?;
-        let cr = cairo::Context::new(&target);
-
-        let bbox = draw_tree(
-            DrawingMode::LimitToStack { node, root },
-            &cr,
-            unit_rectangle(),
-            dpi,
-            true,
-            is_testing,
-            &mut AcquiredNodes::new(&self.document),
-        )?;
-
-        let ink_rect = bbox.ink_rect.unwrap_or_default();
-        let logical_rect = bbox.rect.unwrap_or_default();
-
-        Ok((ink_rect, logical_rect))
+        self.geometry_for_layer(node, unit_rectangle(), dpi, is_testing)
     }
 
     fn get_node_or_root(&self, id: Option<&str>) -> Result<Node, RenderingError> {