Rollup merge of #17014 - hiikezoe:animation-rules-in-norma-restyle, r=emilio,birtles

Animation rules in norma restyle

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This is a PR for https://bugzilla.mozilla.org/show_bug.cgi?id=1366631 and https://bugzilla.mozilla.org/show_bug.cgi?id=1367225

- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because it's for stylo

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components/style/gecko/wrapper.rs

@@ -18,7 +18,7 @@ use app_units::Au;
 use atomic_refcell::AtomicRefCell;
 use context::{QuirksMode, SharedStyleContext, UpdateAnimationsTasks};
 use data::ElementData;
-use dom::{self, AnimationRules, DescendantsBit, LayoutIterator, NodeInfo, TElement, TNode, UnsafeNode};
+use dom::{self, DescendantsBit, LayoutIterator, NodeInfo, TElement, TNode, UnsafeNode};
 use dom::{OpaqueNode, PresentationalHintsSynthesizer};
 use element_state::ElementState;
 use error_reporting::RustLogReporter;
@@ -422,11 +422,6 @@ impl<'le> GeckoElement<'le> {
         }
     }
 
-    #[inline]
-    fn may_have_animations(&self) -> bool {
-        self.as_node().get_bool_flag(nsINode_BooleanFlag::ElementHasAnimations)
-    }
-
     #[inline]
     fn has_id(&self) -> bool {
         self.as_node().get_bool_flag(nsINode_BooleanFlag::ElementHasID)
@@ -613,11 +608,6 @@ impl<'le> TElement for GeckoElement<'le> {
         declarations.map(|s| s.as_arc_opt()).unwrap_or(None)
     }
 
-    fn get_animation_rules(&self) -> AnimationRules {
-        AnimationRules(self.get_animation_rule(),
-                       self.get_transition_rule())
-    }
-
     fn get_animation_rule_by_cascade(&self, cascade_level: ServoCascadeLevel)
                                      -> Option<Arc<Locked<PropertyDeclarationBlock>>> {
         match cascade_level {
@@ -782,6 +772,11 @@ impl<'le> TElement for GeckoElement<'le> {
         (self.flags() & node_flags) == node_flags
     }
 
+    #[inline]
+    fn may_have_animations(&self) -> bool {
+        self.as_node().get_bool_flag(nsINode_BooleanFlag::ElementHasAnimations)
+    }
+
     fn update_animations(&self,
                          before_change_style: Option<Arc<ComputedValues>>,
                          tasks: UpdateAnimationsTasks) {