style: Use rust lengths for border corners.

The test in https://github.com/web-platform-tests/wpt/pull/15423 hasn't been
synced over yet, but it passes with this patch of course.

Differential Revision: https://phabricator.services.mozilla.com/D20960

1 files changed, 13 insertions, 6 deletions

diff --git a/components/style/values/generics/border.rs b/components/style/values/generics/border.rs
index 148f74e3834..bfc7ac5814a 100644
--- a/components/style/values/generics/border.rs
+++ b/components/style/values/generics/border.rs
@@ -53,7 +53,10 @@ pub use self::GenericBorderImageSlice as BorderImageSlice;
     ToComputedValue,
     ToCss,
 )]
-pub struct BorderCornerRadius<L>(#[css(field_bound)] pub Size2D<L>);
+#[repr(C)]
+pub struct GenericBorderCornerRadius<L>(#[css(field_bound)] pub Size2D<L>);
+
+pub use self::GenericBorderCornerRadius as BorderCornerRadius;
 
 impl<L> BorderCornerRadius<L> {
     /// Trivially create a `BorderCornerRadius`.
@@ -77,6 +80,7 @@ impl<L> BorderCornerRadius<L> {
     ToComputedValue,
     ToCss,
 )]
+#[repr(transparent)]
 pub struct BorderSpacing<L>(#[css(field_bound)] pub Size2D<L>);
 
 impl<L> BorderSpacing<L> {
@@ -101,17 +105,20 @@ impl<L> BorderSpacing<L> {
     ToAnimatedValue,
     ToComputedValue,
 )]
-pub struct BorderRadius<LengthPercentage> {
+#[repr(C)]
+pub struct GenericBorderRadius<LengthPercentage> {
     /// The top left radius.
-    pub top_left: BorderCornerRadius<LengthPercentage>,
+    pub top_left: GenericBorderCornerRadius<LengthPercentage>,
     /// The top right radius.
-    pub top_right: BorderCornerRadius<LengthPercentage>,
+    pub top_right: GenericBorderCornerRadius<LengthPercentage>,
     /// The bottom right radius.
-    pub bottom_right: BorderCornerRadius<LengthPercentage>,
+    pub bottom_right: GenericBorderCornerRadius<LengthPercentage>,
     /// The bottom left radius.
-    pub bottom_left: BorderCornerRadius<LengthPercentage>,
+    pub bottom_left: GenericBorderCornerRadius<LengthPercentage>,
 }
 
+pub use self::GenericBorderRadius as BorderRadius;
+
 impl<L> BorderRadius<L> {
     /// Returns a new `BorderRadius<L>`.
     #[inline]