Bug 1779454 - Fix Netflix wrapper to allow scrubbing. r=pip-reviewers,mhowell

Differential Revision: https://phabricator.services.mozilla.com/D166403

browser/extensions/pictureinpicture/video-wrappers/netflix.js

@@ -17,11 +17,23 @@ class PictureInPictureVideoWrapper {
     }
     this.player = netflixPlayerAPI.getVideoPlayerBySessionId(sessionId);
   }
+  /**
+   * The Netflix player returns the current time in milliseconds so we convert
+   * to seconds before returning.
+   * @param {HTMLVideoElement} video The original video element
+   * @returns {Number} The current time in seconds
+   */
   getCurrentTime(video) {
-    return this.player.getCurrentTime();
+    return this.player.getCurrentTime() / 1000;
   }
+  /**
+   * The Netflix player returns the duration in milliseconds so we convert to
+   * seconds before returning.
+   * @param {HTMLVideoElement} video The original video element
+   * @returns {Number} The duration in seconds
+   */
   getDuration(video) {
-    return this.player.getDuration();
+    return this.player.getDuration() / 1000;
   }
   play() {
     this.player.play();
@@ -53,29 +65,13 @@ class PictureInPictureVideoWrapper {
     }
   }
 
+  /**
+   * Set the current time of the video in milliseconds.
+   * @param {HTMLVideoElement} video The original video element
+   * @param {Number} position The new time in seconds
+   */
   setCurrentTime(video, position) {
-    let oldTime = this.player.getCurrentTime();
-    let duration = this.player.getDuration();
-    let isHome = position == 0;
-    let isEnd = position >= duration;
-    // Read pipChild's expected seek result to determine if we want
-    // to move forward/backwards, or go to the start/end
-    let seekDirection = position - oldTime;
-    // But ignore pipChild's proposed seek forward/backward time for a better viewing
-    // experience. 10 seconds (10000ms) seems to be the best value for compatibility.
-    // The new currentTime will not always be 10 seconds forward/backward though, since Netflix
-    // adjusts the new currentTime when seek() is called, according to the current timestamp.
-    let seekTimeMS = 10000;
-    let newTime = 0;
-
-    if (isHome || isEnd) {
-      newTime = position;
-    } else if (seekDirection < 0) {
-      newTime = Math.max(oldTime - seekTimeMS, 0);
-    } else if (seekDirection > 0) {
-      newTime = Math.min(oldTime + seekTimeMS, duration);
-    }
-    this.player.seek(newTime);
+    this.player.seek(position * 1000);
   }
 }