style: Use consistent naming and shared code for out-of-flow stuff.

Use the functions introduced in ee17eed.

components/style/properties/longhands/box.mako.rs

@@ -53,10 +53,7 @@ ${helpers.single_keyword(
 >
 impl computed_value::T {
     pub fn is_absolutely_positioned(self) -> bool {
-        match self {
-            Self::Absolute | Self::Fixed => true,
-            _ => false,
-        }
+        matches!(self, Self::Absolute | Self::Fixed)
     }
 }
 </%helpers:single_keyword>

components/style/properties/properties.mako.rs

@@ -3694,16 +3694,14 @@ impl<'a> StyleBuilder<'a> {
     <% del style_struct %>
 
     /// Returns whether this computed style represents a floated object.
-    pub fn floated(&self) -> bool {
-        self.get_box().clone_float() != longhands::float::computed_value::T::None
+    pub fn is_floating(&self) -> bool {
+        self.get_box().clone_float().is_floating()
     }
 
-    /// Returns whether this computed style represents an out of flow-positioned
+    /// Returns whether this computed style represents an absolutely-positioned
     /// object.
-    pub fn out_of_flow_positioned(&self) -> bool {
-        use crate::properties::longhands::position::computed_value::T as Position;
-        matches!(self.get_box().clone_position(),
-                 Position::Absolute | Position::Fixed)
+    pub fn is_absolutely_positioned(&self) -> bool {
+        self.get_box().clone_position().is_absolutely_positioned()
     }
 
     /// Whether this style has a top-layer style.

components/style/style_adjuster.rs

@@ -145,7 +145,7 @@ impl<'a, 'b: 'a> StyleAdjuster<'a, 'b> {
     ///    computed to 'absolute' if the element is in a top layer.
     ///
     fn adjust_for_top_layer(&mut self) {
-        if !self.style.out_of_flow_positioned() && self.style.in_top_layer() {
+        if !self.style.is_absolutely_positioned() && self.style.in_top_layer() {
             self.style.mutate_box().set_position(Position::Absolute);
         }
     }
@@ -156,7 +156,7 @@ impl<'a, 'b: 'a> StyleAdjuster<'a, 'b> {
     ///    value of 'float' is 'none'.
     ///
     fn adjust_for_position(&mut self) {
-        if self.style.out_of_flow_positioned() && self.style.floated() {
+        if self.style.is_absolutely_positioned() && self.style.is_floating() {
             self.style.mutate_box().set_float(Float::None);
         }
     }
@@ -205,8 +205,8 @@ impl<'a, 'b: 'a> StyleAdjuster<'a, 'b> {
 
         let is_item_or_root = blockify;
 
-        blockify_if!(self.style.floated());
-        blockify_if!(self.style.out_of_flow_positioned());
+        blockify_if!(self.style.is_floating());
+        blockify_if!(self.style.is_absolutely_positioned());
         #[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
         blockify_if!(
             self.style.pseudo.map_or(false, |p| p.is_marker()) &&
@@ -375,7 +375,7 @@ impl<'a, 'b: 'a> StyleAdjuster<'a, 'b> {
         use crate::computed_values::align_self::T as AlignSelf;
 
         if self.style.get_position().clone_align_self() == AlignSelf::Auto &&
-            !self.style.out_of_flow_positioned()
+            !self.style.is_absolutely_positioned()
         {
             let self_align = match layout_parent_style.get_position().clone_align_items() {
                 AlignItems::Stretch => AlignSelf::Stretch,
@@ -556,7 +556,7 @@ impl<'a, 'b: 'a> StyleAdjuster<'a, 'b> {
     #[cfg(feature = "gecko")]
     fn should_suppress_linebreak(&self, layout_parent_style: &ComputedValues) -> bool {
         // Line break suppression should only be propagated to in-flow children.
-        if self.style.floated() || self.style.out_of_flow_positioned() {
+        if self.style.is_floating() || self.style.is_absolutely_positioned() {
             return false;
         }
         let parent_display = layout_parent_style.get_box().clone_display();