Move generated bindings to script_bindings (#36323)

This is the final step of #1799, where the majority of the generated
code for the JS bindings is now compiled as part of the script_bindings
build step. The remaining pieces in script must live there because they
refer to concrete DOM types; all code in script_bindings is generic over
the
[DomTypes](https://doc.servo.org/script/dom/bindings/codegen/DomTypes/trait.DomTypes.html)
trait.

My testing with incremental builds shows me a 12 second reduction in
build times on my 2024 M4 Macbook Pro when modifying code in the script
crate after these changes. Before this PR those changes took 20 seconds
to rebuild Servo, and now they take 8 seconds.

Testing: Existing WPT tests ensure no regressions.
Fixes: #1799

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

components/script_bindings/import.rs

@@ -0,0 +1,137 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+pub(crate) mod base {
+    pub(crate) use std::ptr;
+    pub(crate) use std::rc::Rc;
+
+    pub(crate) use js::conversions::{
+        ConversionBehavior, ConversionResult, FromJSValConvertible, ToJSValConvertible,
+    };
+    pub(crate) use js::error::throw_type_error;
+    pub(crate) use js::jsapi::{
+        CurrentGlobalOrNull, HandleValue as RawHandleValue, HandleValueArray, Heap, IsCallable,
+        JS_NewObject, JSContext, JSObject,
+    };
+    pub(crate) use js::jsval::{JSVal, NullValue, ObjectOrNullValue, ObjectValue, UndefinedValue};
+    pub(crate) use js::panic::maybe_resume_unwind;
+    pub(crate) use js::rust::wrappers::{Call, JS_WrapValue};
+    pub(crate) use js::rust::{HandleObject, HandleValue, MutableHandleObject, MutableHandleValue};
+
+    pub(crate) use crate::callback::{
+        CallSetup, CallbackContainer, CallbackFunction, CallbackInterface, CallbackObject,
+        ExceptionHandling, ThisReflector, wrap_call_this_value,
+    };
+    pub(crate) use crate::codegen::DomTypes::DomTypes;
+    pub(crate) use crate::codegen::GenericUnionTypes;
+    pub(crate) use crate::conversions::{StringificationBehavior, root_from_handlevalue};
+    pub(crate) use crate::error::Error::JSFailed;
+    pub(crate) use crate::error::Fallible;
+    pub(crate) use crate::interfaces::*;
+    pub(crate) use crate::lock::ThreadUnsafeOnceLock;
+    pub(crate) use crate::num::Finite;
+    pub(crate) use crate::proxyhandler::CrossOriginProperties;
+    pub(crate) use crate::reflector::{DomGlobalGeneric, DomObject};
+    pub(crate) use crate::root::DomRoot;
+    pub(crate) use crate::script_runtime::{CanGc, JSContext as SafeJSContext};
+    pub(crate) use crate::str::{ByteString, DOMString, USVString};
+    pub(crate) use crate::trace::RootedTraceableBox;
+    pub(crate) use crate::utils::{get_dictionary_property, set_dictionary_property};
+}
+
+pub(crate) mod module {
+    pub(crate) use std::cmp;
+    pub(crate) use std::ffi::CString;
+    pub(crate) use std::ptr::NonNull;
+
+    pub(crate) use js::conversions::ToJSValConvertible;
+    pub(crate) use js::glue::{
+        CreateProxyHandler, GetProxyReservedSlot, JS_GetReservedSlot, ProxyTraps,
+        SetProxyReservedSlot,
+    };
+    pub(crate) use js::jsapi::{
+        __BindgenBitfieldUnit, CallArgs, GCContext, GetRealmErrorPrototype,
+        GetRealmFunctionPrototype, GetRealmIteratorPrototype, GetRealmObjectPrototype,
+        GetWellKnownSymbol, Handle as RawHandle, HandleId as RawHandleId,
+        HandleObject as RawHandleObject, JS_AtomizeAndPinString, JS_ForwardGetPropertyTo,
+        JS_GetPropertyDescriptorById, JS_HasPropertyById, JS_NewPlainObject, JS_SetReservedSlot,
+        JSAutoRealm, JSCLASS_FOREGROUND_FINALIZE, JSCLASS_RESERVED_SLOTS_SHIFT, JSClass,
+        JSClassOps, JSFunctionSpec, JSITER_HIDDEN, JSITER_OWNONLY, JSITER_SYMBOLS,
+        JSJitGetterCallArgs, JSJitInfo, JSJitInfo__bindgen_ty_1, JSJitInfo__bindgen_ty_2,
+        JSJitInfo__bindgen_ty_3, JSJitInfo_AliasSet, JSJitInfo_ArgType, JSJitInfo_OpType,
+        JSJitMethodCallArgs, JSJitSetterCallArgs, JSNativeWrapper, JSPROP_ENUMERATE,
+        JSPROP_PERMANENT, JSPROP_READONLY, JSPropertySpec, JSPropertySpec_Accessor,
+        JSPropertySpec_AccessorsOrValue, JSPropertySpec_AccessorsOrValue_Accessors,
+        JSPropertySpec_Kind, JSPropertySpec_Name, JSPropertySpec_ValueWrapper,
+        JSPropertySpec_ValueWrapper__bindgen_ty_1, JSPropertySpec_ValueWrapper_Type, JSTracer,
+        JSTypedMethodJitInfo, JSValueType, MutableHandle as RawMutableHandle,
+        MutableHandleIdVector as RawMutableHandleIdVector,
+        MutableHandleObject as RawMutableHandleObject, MutableHandleValue as RawMutableHandleValue,
+        ObjectOpResult, PropertyDescriptor, SymbolCode, UndefinedHandleValue, jsid,
+    };
+    pub(crate) use js::jsval::PrivateValue;
+    pub(crate) use js::panic::wrap_panic;
+    pub(crate) use js::rust::wrappers::{
+        AppendToIdVector, Call, GetPropertyKeys, JS_CopyOwnPropertiesAndPrivateFields,
+        JS_DefineProperty, JS_DefinePropertyById2, JS_GetProperty,
+        JS_InitializePropertiesFromCompatibleNativeObject, JS_NewObjectWithGivenProto,
+        JS_NewObjectWithoutMetadata, JS_SetImmutablePrototype, JS_SetProperty, JS_SetPrototype,
+        JS_WrapObject, NewProxyObject, RUST_INTERNED_STRING_TO_JSID, RUST_SYMBOL_TO_JSID,
+        int_to_jsid,
+    };
+    pub(crate) use js::rust::{
+        CustomAutoRooterGuard, GCMethods, Handle, MutableHandle, get_context_realm,
+        get_object_class, get_object_realm,
+    };
+    pub(crate) use js::typedarray::{
+        ArrayBuffer, ArrayBufferView, Float32Array, Float64Array, Uint8Array, Uint8ClampedArray,
+    };
+    pub(crate) use js::{
+        JS_CALLEE, JSCLASS_GLOBAL_SLOT_COUNT, JSCLASS_IS_DOMJSCLASS, JSCLASS_IS_GLOBAL,
+        JSCLASS_RESERVED_SLOTS_MASK, typedarray,
+    };
+    pub(crate) use servo_config::pref;
+
+    pub(crate) use super::base::*;
+    pub(crate) use crate::codegen::Globals::Globals;
+    pub(crate) use crate::codegen::{PrototypeList, RegisterBindings};
+    pub(crate) use crate::constant::{ConstantSpec, ConstantVal};
+    pub(crate) use crate::constructor::call_default_constructor;
+    pub(crate) use crate::conversions::{
+        DOM_OBJECT_SLOT, StringificationBehavior, is_array_like, jsid_to_string,
+        native_from_handlevalue, native_from_object_static,
+    };
+    pub(crate) use crate::error::{Error, ErrorResult};
+    pub(crate) use crate::finalize::{
+        finalize_common, finalize_global, finalize_weak_referenceable,
+    };
+    pub(crate) use crate::guard::{Condition, Guard};
+    pub(crate) use crate::inheritance::Castable;
+    pub(crate) use crate::interface::{
+        ConstructorClassHook, InterfaceConstructorBehavior, NonCallbackInterfaceObjectClass,
+        ProtoOrIfaceIndex, create_callback_interface_object, create_global_object,
+        create_interface_prototype_object, create_named_constructors,
+        create_noncallback_interface_object, define_dom_interface, define_guarded_methods,
+        define_guarded_properties, get_per_interface_object_handle, is_exposed_in,
+    };
+    pub(crate) use crate::iterable::{Iterable, IterableIterator, IteratorType};
+    pub(crate) use crate::like::{Maplike, Setlike};
+    pub(crate) use crate::mem::malloc_size_of_including_raw_self;
+    pub(crate) use crate::namespace::{NamespaceObjectClass, create_namespace_object};
+    pub(crate) use crate::proxyhandler::{
+        ensure_expando_object, get_expando_object, set_property_descriptor,
+    };
+    pub(crate) use crate::realms::{AlreadyInRealm, InRealm};
+    pub(crate) use crate::root::{Dom, DomSlice, MaybeUnreflectedDom, Root};
+    pub(crate) use crate::script_runtime::CanGc;
+    pub(crate) use crate::utils::{
+        AsVoidPtr, DOM_PROTO_UNFORGEABLE_HOLDER_SLOT, DOMClass, DOMJSClass, JSCLASS_DOM_GLOBAL,
+        ProtoOrIfaceArray, enumerate_global, exception_to_promise, generic_getter,
+        generic_lenient_getter, generic_lenient_setter, generic_method, generic_setter,
+        generic_static_promise_method, get_array_index_from_id, get_property_on_prototype,
+        has_property_on_prototype, resolve_global, trace_global,
+    };
+    pub(crate) use crate::weakref::DOM_WEAK_SLOT;
+    pub(crate) use crate::{JSTraceable, proxyhandler};
+}