[librsvg: 43/90] DrawingCtx::mask_surface(): inline into its only caller

[Federico Mena Quintero <federico src gnome org>]

commit 19fb7e853301b199714831256091cc9fd6166afa
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Mar 14 18:54:12 2019 -0600

    DrawingCtx::mask_surface(): inline into its only caller

 rsvg_internals/src/drawing_ctx.rs | 8 --------
 rsvg_internals/src/mask.rs        | 7 ++++++-
 2 files changed, 6 insertions(+), 9 deletions(-)
---
diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index b2d42ecf..7c6449db 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -843,14 +843,6 @@ impl DrawingCtx {
         res.and_then(|_| self.check_limits())
     }
 
-    pub fn mask_surface(&mut self, mask: &cairo::ImageSurface) {
-        let cr = self.get_cairo_context();
-
-        cr.identity_matrix();
-
-        cr.mask_surface(&mask, 0.0, 0.0);
-    }
-
     pub fn add_node_and_ancestors_to_stack(&mut self, node: &RsvgNode) {
         self.drawsub_stack.push(node.clone());
         if let Some(ref parent) = node.get_parent() {
diff --git a/rsvg_internals/src/mask.rs b/rsvg_internals/src/mask.rs
index 502e2125..dc80821d 100644
--- a/rsvg_internals/src/mask.rs
+++ b/rsvg_internals/src/mask.rs
@@ -140,7 +140,12 @@ impl NodeMask {
 
         let Opacity(opacity) = values.opacity;
         let mask_surface = compute_luminance_to_alpha(surface, opacity)?;
-        draw_ctx.mask_surface(&mask_surface);
+
+        let cr = draw_ctx.get_cairo_context();
+
+        cr.identity_matrix();
+
+        cr.mask_surface(&mask_surface, 0.0, 0.0);
 
         Ok(())
     }