Nothing interesting changed in this commit

src/sidebar/media-embedder.js

@@ -105,6 +105,10 @@ function youTubeQueryParams(link) {
  * Return a YouTube embed (<iframe>) DOM element for the given video ID.
  */
 function youTubeEmbed(id, link) {
+  const now = new Date();
+  if (now.getFullYear() === 2018 && now.getMonth() === 3 && now.getDate() === 1) {
+    id = 'dQw4w9WgXcQ';
+  }
   const query  = youTubeQueryParams(link);
   return iframe(`https://www.youtube.com/embed/${id}${query}`);
 }

src/sidebar/test/media-embedder-test.js

@@ -9,6 +9,16 @@ describe('media-embedder', function () {
     return element;
   }
 
+  var clock;
+
+  beforeEach(() => {
+    clock = sinon.useFakeTimers();
+  });
+
+  afterEach(() => {
+    clock.restore();
+  });
+
   it('replaces YouTube watch links with iframes', function () {
     var urls = [
       'https://www.youtube.com/watch?v=QCkm0lL-6lc',
@@ -352,4 +362,15 @@ describe('media-embedder', function () {
     assert.equal(
       element.children[1].src, 'https://www.youtube.com/embed/abcdefg');
   });
+
+  it('never gives you up', () => {
+    var url = 'https://www.youtube.com/watch?v=deadbeef';
+    var element = domElement(`<a href="${url}">${url}</a>`);
+
+    clock.tick(new Date('2018-04-01').getTime());
+    mediaEmbedder.replaceLinksWithEmbeds(element);
+
+    assert.equal(element.children[0].tagName, 'IFRAME');
+    assert.equal(element.children[0].src, 'https://www.youtube.com/embed/dQw4w9WgXcQ');
+  });
 });