Auto merge of #11456 - emilio:stylo-linear-gradient, r=mbrubeck

stylo: Support linear-gradients as background-image

This PR supports setting the background-image property to a linear-gradient in Geckolib.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [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 these are geckolib-only changes.

r? @mbrubeck
cc @heycam @bholley

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components/style/properties/longhand/inherited_text.mako.rs

@@ -309,8 +309,7 @@ ${helpers.predefined_type("text-indent",
 // name per CSS-TEXT 6.2.
 ${helpers.single_keyword("overflow-wrap",
                          "normal break-word",
-                         gecko_ffi_name="mWordWrap",
-                         gecko_constant_prefix="NS_STYLE_WORDWRAP")}
+                         gecko_constant_prefix="NS_STYLE_OVERFLOWWRAP")}
 
 // TODO(pcwalton): Support `word-break: keep-all` once we have better CJK support.
 ${helpers.single_keyword("word-break",

components/style/values.rs

@@ -1179,6 +1179,7 @@ pub mod specified {
     }
 
     impl Angle {
+        #[inline]
         pub fn radians(self) -> f32 {
             let Angle(radians) = self;
             radians