LibGfx: Templatize Point, Size, and Rect

Author: https://github.com/mattco98
Commit: 335916d8db
Pull-request: https://github.com/SerenityOS/serenity/pull/2888
Reviewed-by: https://github.com/awesomekling

Libraries/LibWeb/Layout/LayoutFrame.cpp

@@ -90,7 +90,7 @@ void LayoutFrame::did_set_rect()
     LayoutReplaced::did_set_rect();
 
     ASSERT(node().hosted_frame());
-    node().hosted_frame()->set_size(size().to_int_size());
+    node().hosted_frame()->set_size(size().to_type<int>());
 }
 
 }