Introduce embedder MediaSessionEvent and move active session to Servo

components/script_traits/lib.rs

@@ -1087,34 +1087,3 @@ pub enum MediaSessionActionType {
     /// The action intent is to move the playback time to a specific time.
     SeekTo,
 }
-
-/// https://w3c.github.io/mediasession/#mediametadata
-#[derive(Clone, Debug, Deserialize, Serialize)]
-pub struct MediaMetadata {
-    /// Title
-    pub title: String,
-    /// Artist
-    pub artist: Option<String>,
-    /// Album
-    pub album: Option<String>,
-}
-
-/// https://w3c.github.io/mediasession/#enumdef-mediasessionplaybackstate
-#[derive(Clone, Debug, Deserialize, Serialize)]
-pub enum MediaSessionPlaybackState {
-    /// The browsing context does not specify whether it’s playing or paused.
-    None_,
-    /// The browsing context has paused media and it can be resumed.
-    Playing,
-    /// The browsing context is currently playing media and it can be paused.
-    Paused,
-}
-
-/// Type of events sent from script to the constellation about the media session.
-#[derive(Clone, Debug, Deserialize, Serialize)]
-pub enum MediaSessionEvent {
-    /// Indicates that the media metadata is available.
-    SetMetadata(MediaMetadata),
-    /// Indicates that the playback state has changed.
-    PlaybackStateChange(MediaSessionPlaybackState),
-}

components/script_traits/script_msg.rs

@@ -255,9 +255,6 @@ pub enum ScriptMsg {
     GetScreenSize(IpcSender<DeviceIntSize>),
     /// Get the available screen size (pixel)
     GetScreenAvailSize(IpcSender<DeviceIntSize>),
-    /// Notifies the constellation about media session events
-    /// (i.e. when there is metadata for the active media session, playback state changes...).
-    MediaSessionEventMsg(TopLevelBrowsingContextId, MediaSessionEvent),
 }
 
 impl fmt::Debug for ScriptMsg {
@@ -309,7 +306,6 @@ impl fmt::Debug for ScriptMsg {
             GetClientWindow(..) => "GetClientWindow",
             GetScreenSize(..) => "GetScreenSize",
             GetScreenAvailSize(..) => "GetScreenAvailSize",
-            MediaSessionEventMsg(..) => "MediaSessionEventMsg",
         };
         write!(formatter, "ScriptMsg::{}", variant)
     }