Add TODOs to convert from video-test.js to testharness.js

third_party/WebKit/LayoutTests/media/video-play-empty-events.html

Index: third_party/WebKit/LayoutTests/media/video-play-empty-events.html
diff --git a/third_party/WebKit/LayoutTests/media/video-play-empty-events.html b/third_party/WebKit/LayoutTests/media/video-play-empty-events.html
index 25750e3f50a309a65490e8f3fd4e5da92b552519..e9c896dc04ae0dac16d0507b2f3be0626931058d 100644
--- a/third_party/WebKit/LayoutTests/media/video-play-empty-events.html
+++ b/third_party/WebKit/LayoutTests/media/video-play-empty-events.html
@@ -4,10 +4,12 @@
     <video controls></video>
     <p>Test that play() from EMPTY network state triggers load() and async play event.</p>
     <script src=media-file.js></script>
+    <!-- TODO(philipj): Convert test to testharness.js. crbug.com/588956
+         (Please avoid writing new tests using video-test.js) -->
     <script src=video-test.js></script>
     <script>
         testExpected("video.networkState", HTMLMediaElement.NETWORK_EMPTY);
-    
+
         waitForEvent("loadstart");
         waitForEvent("ratechange");
         waitForEvent("waiting");
@@ -17,9 +19,9 @@
         waitForEvent("loadeddata");
         waitForEvent("canplay");
         waitForEvent("play");
-    
+
         waitForEvent('playing', function () { testExpected("video.paused", false); endTest(); } );
-    
+
         video.src = findMediaFile("video", "content/test");
         run("video.play()");
         consoleWrite("SCRIPT DONE");