script: Move WebGL DOM interfaces to script/dom/webgl/ (#38995)

Move interfaces defined by the WebGL spec to the `script/dom/webgl/
`module from `script/dom/`.

`script/dom/webgl*.rs` -> `script/dom/webgl/`
`script/dom/webgl_extensions` -> `script/dom/webgl/extensions`
`script/dom/webgl_validations` -> `script/dom/webgl/validations`

Testing: No changes, just a refactoring

Fixes (partially): #38901

Signed-off-by: Andrei Volykhin <volykhin.andrei@huawei.com>
Co-authored-by: Andrei Volykhin <volykhin.andrei@huawei.com>

components/script/dom/webgl/webglactiveinfo.rs

@@ -0,0 +1,64 @@
+/* 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/. */
+
+// https://www.khronos.org/registry/webgl/specs/latest/1.0/webgl.idl
+use dom_struct::dom_struct;
+
+use crate::dom::bindings::codegen::Bindings::WebGLActiveInfoBinding::WebGLActiveInfoMethods;
+use crate::dom::bindings::reflector::{Reflector, reflect_dom_object};
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::bindings::str::DOMString;
+use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
+
+#[dom_struct]
+pub(crate) struct WebGLActiveInfo {
+    reflector_: Reflector,
+    size: i32,
+    // NOTE: `ty` stands for `type`, which is a reserved keyword
+    ty: u32,
+    name: DOMString,
+}
+
+impl WebGLActiveInfo {
+    fn new_inherited(size: i32, ty: u32, name: DOMString) -> WebGLActiveInfo {
+        WebGLActiveInfo {
+            reflector_: Reflector::new(),
+            size,
+            ty,
+            name,
+        }
+    }
+
+    pub(crate) fn new(
+        window: &Window,
+        size: i32,
+        ty: u32,
+        name: DOMString,
+        can_gc: CanGc,
+    ) -> DomRoot<WebGLActiveInfo> {
+        reflect_dom_object(
+            Box::new(WebGLActiveInfo::new_inherited(size, ty, name)),
+            window,
+            can_gc,
+        )
+    }
+}
+
+impl WebGLActiveInfoMethods<crate::DomTypeHolder> for WebGLActiveInfo {
+    // https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.11.1
+    fn Size(&self) -> i32 {
+        self.size
+    }
+
+    // https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.11.1
+    fn Type(&self) -> u32 {
+        self.ty
+    }
+
+    // https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.11.1
+    fn Name(&self) -> DOMString {
+        self.name.clone()
+    }
+}