Moving MouseButton from msg to script_traits

components/msg/constellation_msg.rs

@@ -200,17 +200,6 @@ bitflags! {
     }
 }
 
-/// The mouse button involved in the event.
-#[derive(Clone, Copy, Debug, Deserialize, Serialize)]
-pub enum MouseButton {
-    /// The left mouse button.
-    Left,
-    /// The middle mouse button.
-    Middle,
-    /// The right mouse button.
-    Right,
-}
-
 #[derive(Deserialize, Serialize)]
 pub enum WebDriverCommandMsg {
     LoadUrl(PipelineId, LoadData, IpcSender<LoadStatus>),