Remove remaining as_slice / as_mut_slice calls.

components/canvas/canvas_paint_task.rs

@@ -149,7 +149,7 @@ impl<'a> CanvasPaintTask<'a> {
         }
         let image_rect = Rect(Point2D(0f64, 0f64), image_size);
         // rgba -> bgra
-        byte_swap(imagedata.as_mut_slice());
+        byte_swap(&mut imagedata);
         self.write_pixels(&imagedata, image_size, image_rect, dest_rect, smoothing_enabled);
     }
 

components/script/dom/htmlcanvaselement.rs

@@ -242,11 +242,11 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLCanvasElement> {
         let value = attr.value();
         let recreate = match attr.local_name() {
             &atom!("width") => {
-                self.width.set(parse_unsigned_integer(value.as_slice().chars()).unwrap_or(DEFAULT_WIDTH));
+                self.width.set(parse_unsigned_integer(value.chars()).unwrap_or(DEFAULT_WIDTH));
                 true
             }
             &atom!("height") => {
-                self.height.set(parse_unsigned_integer(value.as_slice().chars()).unwrap_or(DEFAULT_HEIGHT));
+                self.height.set(parse_unsigned_integer(value.chars()).unwrap_or(DEFAULT_HEIGHT));
                 true
             }
             _ => false,

components/script/dom/htmlinputelement.rs

@@ -854,7 +854,7 @@ impl<'a> Activatable for JSRef<'a, HTMLInputElement> {
                         .filter_map(HTMLInputElementCast::to_temporary)
                         .filter(|input| {
                             let input = input.root();
-                            input.r().form_owner() == owner && match input.r().Type().as_slice() {
+                            input.r().form_owner() == owner && match &*input.r().Type() {
                                 "text" | "search" | "url" | "tel" |
                                 "email" | "password" | "datetime" |
                                 "date" | "month" | "week" | "time" |