style: Use Serde for rotate, scale, and translate properties.

The only drawback is: we resolve LengthPercentage value before passing
translate property through IPC, so its percentage part is redundant.
However, this makes us easier to maintain the Rust type.

Differential Revision: https://phabricator.services.mozilla.com/D60044

components/style/values/generics/transform.rs

@@ -611,8 +611,10 @@ pub fn get_normalized_vector_and_angle<T: Zero>(
     Clone,
     Copy,
     Debug,
+    Deserialize,
     MallocSizeOf,
     PartialEq,
+    Serialize,
     SpecifiedValueInfo,
     ToAnimatedZero,
     ToComputedValue,
@@ -623,6 +625,7 @@ pub fn get_normalized_vector_and_angle<T: Zero>(
 /// A value of the `Rotate` property
 ///
 /// <https://drafts.csswg.org/css-transforms-2/#individual-transforms>
+/// cbindgen:private-default-tagged-enum-constructor=false
 pub enum GenericRotate<Number, Angle> {
     /// 'none'
     None,
@@ -685,8 +688,10 @@ where
     Clone,
     Copy,
     Debug,
+    Deserialize,
     MallocSizeOf,
     PartialEq,
+    Serialize,
     SpecifiedValueInfo,
     ToAnimatedZero,
     ToComputedValue,
@@ -697,6 +702,7 @@ where
 /// A value of the `Scale` property
 ///
 /// <https://drafts.csswg.org/css-transforms-2/#individual-transforms>
+/// cbindgen:private-default-tagged-enum-constructor=false
 pub enum GenericScale<Number> {
     /// 'none'
     None,
@@ -749,8 +755,10 @@ fn y_axis_and_z_axis_are_zero<LengthPercentage: Zero, Length: Zero>(
 #[derive(
     Clone,
     Debug,
+    Deserialize,
     MallocSizeOf,
     PartialEq,
+    Serialize,
     SpecifiedValueInfo,
     ToAnimatedZero,
     ToComputedValue,
@@ -772,6 +780,7 @@ fn y_axis_and_z_axis_are_zero<LengthPercentage: Zero, Length: Zero>(
 /// https://github.com/w3c/csswg-drafts/issues/3305
 ///
 /// <https://drafts.csswg.org/css-transforms-2/#individual-transforms>
+/// cbindgen:private-default-tagged-enum-constructor=false
 pub enum GenericTranslate<LengthPercentage, Length>
 where
     LengthPercentage: Zero,