Bug 1367275 - Part 3: stylo: Support font-variation-settings; r=xidorn

MozReview-Commit-ID: 41xVlR8GuOr

layout/style/ServoBindings.toml

@@ -129,6 +129,7 @@ whitelist-types = [
     "mozilla::StyleGrid.*",
     "mozilla::UpdateAnimationsTasks",
     "mozilla::LookAndFeel",
+    "mozilla::gfx::FontVariation",
     ".*ThreadSafe.*Holder",
     "AnonymousContent",
     "AudioContext",
@@ -259,7 +260,8 @@ opaque-types = [
     "std::namespace::atomic___base", "std::atomic__My_base",
     "std::atomic",
     "std::atomic___base",
-    "mozilla::gfx::.*",
+    # We want everything but FontVariation to be opaque but we don't have negative regexes ;_;
+    "mozilla::gfx::(.{0,12}|.{14,}|([^F][^o][^n][^t][^V][^a][^r][^i][^a][^t][^i][^o][^n]))",
     "FallibleTArray",
     "mozilla::dom::Sequence",
     "mozilla::dom::Optional",