From a06b3f2039fa004eb7db12ff127f496498d9b65a Mon Sep 17 00:00:00 2001
From: Xidorn Quan <me@upsuper.org>
Date: Thu, 2 Mar 2017 17:59:27 +1100
Subject: [PATCH] Allow animation-name to be omitted from shorthand

---
 .../style/properties/shorthand/box.mako.rs    | 41 +++++++++----------
 1 file changed, 19 insertions(+), 22 deletions(-)

diff --git a/components/style/properties/shorthand/box.mako.rs b/components/style/properties/shorthand/box.mako.rs
index 3bb821fe737..0fa958952cd 100644
--- a/components/style/properties/shorthand/box.mako.rs
+++ b/components/style/properties/shorthand/box.mako.rs
@@ -198,28 +198,25 @@ macro_rules! try_parse_one {
                 break
             }
 
-            if let Some(name) = name {
-                Ok(SingleAnimation {
-                    animation_name: name,
-                    animation_duration:
-                        duration.unwrap_or_else(animation_duration::single_value::get_initial_value),
-                    animation_timing_function:
-                        timing_function.unwrap_or_else(animation_timing_function::single_value
-                                                                                ::get_initial_specified_value),
-                    animation_delay:
-                        delay.unwrap_or_else(animation_delay::single_value::get_initial_value),
-                    animation_iteration_count:
-                        iteration_count.unwrap_or_else(animation_iteration_count::single_value::get_initial_value),
-                    animation_direction:
-                        direction.unwrap_or_else(animation_direction::single_value::get_initial_value),
-                    animation_fill_mode:
-                        fill_mode.unwrap_or_else(animation_fill_mode::single_value::get_initial_value),
-                    animation_play_state:
-                        play_state.unwrap_or_else(animation_play_state::single_value::get_initial_value),
-                })
-            } else {
-                Err(())
-            }
+            Ok(SingleAnimation {
+                animation_name:
+                    name.unwrap_or_else(animation_name::single_value::get_initial_specified_value),
+                animation_duration:
+                    duration.unwrap_or_else(animation_duration::single_value::get_initial_value),
+                animation_timing_function:
+                    timing_function.unwrap_or_else(animation_timing_function::single_value
+                                                                            ::get_initial_specified_value),
+                animation_delay:
+                    delay.unwrap_or_else(animation_delay::single_value::get_initial_value),
+                animation_iteration_count:
+                    iteration_count.unwrap_or_else(animation_iteration_count::single_value::get_initial_value),
+                animation_direction:
+                    direction.unwrap_or_else(animation_direction::single_value::get_initial_value),
+                animation_fill_mode:
+                    fill_mode.unwrap_or_else(animation_fill_mode::single_value::get_initial_value),
+                animation_play_state:
+                    play_state.unwrap_or_else(animation_play_state::single_value::get_initial_value),
+            })
         }
 
         let mut names = vec![];