skip checking for drm in variants and set last time jump was done

lib/media/gap_jumping_controller.js

@@ -61,6 +61,9 @@ shaka.media.GapJumpingController = class {
     /** @private {boolean} */
     this.didFireLargeGap_ = false;
 
+    /** @private {number} */
+    this.lastJumpTimestamp_ = 0;
+
     /**
      * The stall detector tries to keep the playhead moving forward. It is
      * managed by the gap-jumping controller to avoid conflicts. On some
@@ -143,6 +146,10 @@ shaka.media.GapJumpingController = class {
     if (this.video_.readyState == 0) {
       return;
     }
+    // Don't gap jump if the last jump was too recent.
+    if (Date.now() - this.lastJumpTimestamp_ < 5000) {
+      return;
+    }
     // Do not gap jump if seeking has begun, but the seeking event has not
     // yet fired for this particular seek.
     if (this.video_.seeking) {
@@ -241,7 +248,7 @@ shaka.media.GapJumpingController = class {
             'Jumping forward', jumpSize, 'seconds because of gap starting at',
             buffered.end(gapIndex - 1), 'and ending at', jumpTo);
       }
-
+      this.lastJumpTimestamp_ = Date.now();
       this.video_.currentTime = jumpTo;
     }
   }

lib/player.js

@@ -5409,7 +5409,7 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
             for (const keyId of stream.keyIds) {
               const keyStatus = keyStatusMap[isGlobalStatus ? '00' : keyId];
               variant.allowedByKeySystem = variant.allowedByKeySystem &&
-                  !!keyStatus && !restrictedStatuses.includes(keyStatus);
+                  !restrictedStatuses.includes(keyStatus);
             }
           }