script: Move WebRTC DOM interfaces to script/dom/webrtc/ (#39023)

Move interfaces defined by the WebRTC specification to the
`script/dom/webrtc/` module from `script/dom/`.

`script/dom/rtc*.rs -> script/dom/webrtc/`

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/webrtc/rtcicecandidate.rs

@@ -0,0 +1,138 @@
+/* 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/. */
+
+use dom_struct::dom_struct;
+use js::rust::HandleObject;
+
+use crate::dom::bindings::codegen::Bindings::RTCIceCandidateBinding::{
+    RTCIceCandidateInit, RTCIceCandidateMethods,
+};
+use crate::dom::bindings::error::{Error, Fallible};
+use crate::dom::bindings::reflector::{Reflector, reflect_dom_object_with_proto};
+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 RTCIceCandidate {
+    reflector: Reflector,
+    candidate: DOMString,
+    sdp_m_id: Option<DOMString>,
+    sdp_m_line_index: Option<u16>,
+    username_fragment: Option<DOMString>,
+}
+
+impl RTCIceCandidate {
+    pub(crate) fn new_inherited(
+        candidate: DOMString,
+        sdp_m_id: Option<DOMString>,
+        sdp_m_line_index: Option<u16>,
+        username_fragment: Option<DOMString>,
+    ) -> RTCIceCandidate {
+        RTCIceCandidate {
+            reflector: Reflector::new(),
+            candidate,
+            sdp_m_id,
+            sdp_m_line_index,
+            username_fragment,
+        }
+    }
+
+    pub(crate) fn new(
+        window: &Window,
+        candidate: DOMString,
+        sdp_m_id: Option<DOMString>,
+        sdp_m_line_index: Option<u16>,
+        username_fragment: Option<DOMString>,
+        can_gc: CanGc,
+    ) -> DomRoot<RTCIceCandidate> {
+        Self::new_with_proto(
+            window,
+            None,
+            candidate,
+            sdp_m_id,
+            sdp_m_line_index,
+            username_fragment,
+            can_gc,
+        )
+    }
+
+    fn new_with_proto(
+        window: &Window,
+        proto: Option<HandleObject>,
+        candidate: DOMString,
+        sdp_m_id: Option<DOMString>,
+        sdp_m_line_index: Option<u16>,
+        username_fragment: Option<DOMString>,
+        can_gc: CanGc,
+    ) -> DomRoot<RTCIceCandidate> {
+        reflect_dom_object_with_proto(
+            Box::new(RTCIceCandidate::new_inherited(
+                candidate,
+                sdp_m_id,
+                sdp_m_line_index,
+                username_fragment,
+            )),
+            window,
+            proto,
+            can_gc,
+        )
+    }
+}
+
+impl RTCIceCandidateMethods<crate::DomTypeHolder> for RTCIceCandidate {
+    /// <https://w3c.github.io/webrtc-pc/#dom-rtcicecandidate-constructor>
+    fn Constructor(
+        window: &Window,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+        config: &RTCIceCandidateInit,
+    ) -> Fallible<DomRoot<RTCIceCandidate>> {
+        if config.sdpMid.is_none() && config.sdpMLineIndex.is_none() {
+            return Err(Error::Type(
+                "one of sdpMid and sdpMLineIndex must be set".to_string(),
+            ));
+        }
+        Ok(RTCIceCandidate::new_with_proto(
+            window,
+            proto,
+            config.candidate.clone(),
+            config.sdpMid.clone(),
+            config.sdpMLineIndex,
+            config.usernameFragment.clone(),
+            can_gc,
+        ))
+    }
+
+    /// <https://w3c.github.io/webrtc-pc/#dom-rtcicecandidate-candidate>
+    fn Candidate(&self) -> DOMString {
+        self.candidate.clone()
+    }
+
+    /// <https://w3c.github.io/webrtc-pc/#dom-rtcicecandidate-sdpmid>
+    fn GetSdpMid(&self) -> Option<DOMString> {
+        self.sdp_m_id.clone()
+    }
+
+    /// <https://w3c.github.io/webrtc-pc/#dom-rtcicecandidate-sdpmlineindex>
+    fn GetSdpMLineIndex(&self) -> Option<u16> {
+        self.sdp_m_line_index
+    }
+
+    /// <https://w3c.github.io/webrtc-pc/#dom-rtcicecandidate-usernamefragment>
+    fn GetUsernameFragment(&self) -> Option<DOMString> {
+        self.username_fragment.clone()
+    }
+
+    /// <https://w3c.github.io/webrtc-pc/#dom-rtcicecandidate-tojson>
+    fn ToJSON(&self) -> RTCIceCandidateInit {
+        RTCIceCandidateInit {
+            candidate: self.candidate.clone(),
+            sdpMid: self.sdp_m_id.clone(),
+            sdpMLineIndex: self.sdp_m_line_index,
+            usernameFragment: self.username_fragment.clone(),
+        }
+    }
+}