1 files changed, 8 insertions, 2 deletions
diff --git a/components/shared/constellation/structured_data/transferable.rs b/components/shared/constellation/structured_data/transferable.rs
index 528c1e79e65..3210a41a538 100644
--- a/components/shared/constellation/structured_data/transferable.rs
+++ b/components/shared/constellation/structured_data/transferable.rs
@@ -15,6 +15,12 @@ use strum::EnumIter;
 
 use crate::PortMessageTask;
 
+#[derive(Debug, Deserialize, MallocSizeOf, Serialize)]
+pub struct TransformStreamData {
+    pub readable: (MessagePortId, MessagePortImpl),
+    pub writable: (MessagePortId, MessagePortImpl),
+}
+
 /// All the DOM interfaces that can be transferred.
 #[derive(Clone, Copy, Debug, EnumIter)]
 pub enum Transferrable {
@@ -28,7 +34,7 @@ pub enum Transferrable {
     TransformStream,
 }
 
-#[derive(Clone, Debug, Deserialize, MallocSizeOf, Serialize)]
+#[derive(Debug, Deserialize, MallocSizeOf, Serialize)]
 enum MessagePortState {
     /// <https://html.spec.whatwg.org/multipage/#detached>
     Detached,
@@ -42,7 +48,7 @@ enum MessagePortState {
     Disabled(bool),
 }
 
-#[derive(Clone, Debug, Deserialize, MallocSizeOf, Serialize)]
+#[derive(Debug, Deserialize, MallocSizeOf, Serialize)]
 /// The data and logic backing the DOM managed MessagePort.
 pub struct MessagePortImpl {
     /// The current state of the port.