Use jasmine.addMatchers instead of reaching through jasmine.Expectation [finishes #59518946]

lib/jasmine-core/example/spec/SpecHelper.js

@@ -1,15 +1,15 @@
 beforeEach(function () {
-    jasmine.Expectation.addMatchers({
-        toBePlaying: function () {
-            return {
-                compare: function (actual, expected) {
-                    var player = actual;
+  jasmine.addMatchers({
+    toBePlaying: function () {
+      return {
+        compare: function (actual, expected) {
+          var player = actual;
 
-                    return {
-                        pass: player.currentlyPlayingSong === expected && player.isPlaying
-                    }
-                }
-            };
+          return {
+            pass: player.currentlyPlayingSong === expected && player.isPlaying
+          }
         }
-    });
+      };
+    }
+  });
 });