Auto merge of #11835 - servo:diy-as-unsafe-cell, r=nox

Use our copy of RefCell for style data

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This allows removing `#![feature(as_unsafe_cell)]` in geckolib and make progress towards #11815.

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix part of #11815.

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- [ ] There are tests for these changes OR
- [x] These changes do not require new tests because they don’t introduce no functional changes.

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1 files changed, 1 insertions, 1 deletions

diff --git a/components/script/layout_wrapper.rs b/components/script/layout_wrapper.rs
index 2fc6991310e..681fdab9c46 100644
--- a/components/script/layout_wrapper.rs
+++ b/components/script/layout_wrapper.rs
@@ -50,7 +50,6 @@ use script_layout_interface::{OpaqueStyleAndLayoutData, PartialStyleAndLayoutDat
 use selectors::matching::{DeclarationBlock, ElementFlags};
 use selectors::parser::{AttrSelector, NamespaceConstraint};
 use smallvec::VecLike;
-use std::cell::{Ref, RefCell, RefMut};
 use std::marker::PhantomData;
 use std::mem::{transmute, transmute_copy};
 use string_cache::{Atom, BorrowedAtom, BorrowedNamespace, Namespace};
@@ -60,6 +59,7 @@ use style::dom::{PresentationalHintsSynthetizer, OpaqueNode, TDocument, TElement
 use style::element_state::*;
 use style::properties::{ComputedValues, ServoComputedValues};
 use style::properties::{PropertyDeclaration, PropertyDeclarationBlock};
+use style::refcell::{Ref, RefCell, RefMut};
 use style::restyle_hints::ElementSnapshot;
 use style::selector_impl::{NonTSPseudoClass, ServoSelectorImpl};
 use style::servo::{PrivateStyleData, SharedStyleContext};