Cleaned up stale, commented code from streaming_engine_unit.js.

test/media/streaming_engine_unit.js

@@ -1126,59 +1126,6 @@ describe('StreamingEngine', () => {
     });
 
     it('defers old stream cleanup on switchVariant during update', async () => {
-      //setupVod();
-
-      //// Delay the appendBuffer call until later so we are waiting for this to
-      //// finish when we switch.
-      //let p = new shaka.util.PublicPromise();
-      //const old = mediaSourceEngine.appendBuffer;
-      //// Replace the whole spy since we want to call the original.
-      //mediaSourceEngine.appendBuffer =
-          //jasmine.createSpy('appendBuffer')
-              //.and.callFake(async (type, data, reference) => {
-                //await p;
-                //return Util.invokeSpy(old, type, data, reference);
-              //});
-
-      //streamingEngine.switchVariant(variant, [> clearBuffer= <] true);
-      //await streamingEngine.start();
-      //playing = true;
-
-      //expect(variant.video.createSegmentIndex).not.toHaveBeenCalled();
-      //await Util.fakeEventLoop(1);
-      //expect(variant.video.createSegmentIndex).toHaveBeenCalledTimes(1);
-
-      //streamingEngine.switchVariant(alternateVariant, [> clearBuffer= <] true);
-
-      //// Since a switch occurred in the middle of a fetch for a 'initialVariant'
-      //// segment, the closing of the segment index for 'initialVariant' was
-      //// deferred.
-      //expect(variant.video.closeSegmentIndex).not.toHaveBeenCalled();
-      //expect(variant.video.segmentIndex).not.toBe(null);
-
-      //// Finish the update for 'variant'.
-      //p.resolve();
-
-      //// p = new shaka.util.PublicPromise();
-      //await runTest();
-      //// p.resolve();
-      //// await Util.fakeEventLoop(5);
-      //expect(variant.video.closeSegmentIndex).toHaveBeenCalledTimes(1);
-      //expect(variant.video.segmentIndex).toBe(null);
-      // Create a new promise to delay the appendBuffer for 'alternateVariant'.
-      // p = new shaka.util.PublicPromise();
-      // await Util.fakeEventLoop(1);
-
-
-      // Finish the update for 'alternateVariant'. At this point, the
-      // segmentIndex for 'variant' has been closed.
-
-      // await runTest();
-      // await Util.fakeEventLoop(5);
-      //expect(variant.video.closeSegmentIndex).toHaveBeenCalledTimes(1);
-      //expect(variant.video.segmentIndex).toBe(null);
-
-
       // Delay the appendBuffer call until later so we are waiting for this to
       // finish when we switch.
       let p = new shaka.util.PublicPromise();