Derive ToCss for FontSize

components/style/values/generics/font.rs

@@ -162,14 +162,16 @@ impl Parse for FontTag {
 }
 
 #[derive(Animate, Clone, ComputeSquaredDistance, Copy, Debug, MallocSizeOf)]
-#[derive(PartialEq, ToAnimatedValue, ToAnimatedZero)]
+#[derive(PartialEq, ToAnimatedValue, ToAnimatedZero, ToCss)]
 /// Additional information for keyword-derived font sizes.
 pub struct KeywordInfo<Length> {
     /// The keyword used
     pub kw: KeywordSize,
     /// A factor to be multiplied by the computed size of the keyword
+    #[css(skip)]
     pub factor: f32,
     /// An additional Au offset to add to the kw*factor in the case of calcs
+    #[css(skip)]
     pub offset: Length,
 }
 

components/style/values/specified/font.rs

@@ -118,7 +118,7 @@ impl ToComputedValue for FontWeight {
     }
 }
 
-#[derive(Clone, Debug, MallocSizeOf, PartialEq)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
 /// A specified font-size value
 pub enum FontSize {
     /// A length; e.g. 10px.
@@ -142,21 +142,6 @@ pub enum FontSize {
     System(SystemFont)
 }
 
-impl ToCss for FontSize {
-    fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
-    where
-        W: Write,
-    {
-        match *self {
-            FontSize::Length(ref lop) => lop.to_css(dest),
-            FontSize::Keyword(info) => info.kw.to_css(dest),
-            FontSize::Smaller => dest.write_str("smaller"),
-            FontSize::Larger => dest.write_str("larger"),
-            FontSize::System(sys) => sys.to_css(dest),
-        }
-    }
-}
-
 impl From<LengthOrPercentage> for FontSize {
     fn from(other: LengthOrPercentage) -> Self {
         FontSize::Length(other)