Telemetry: make media perf tests log errors rather than timing out

tools/telemetry/telemetry/page/actions/play.js

Index: tools/telemetry/telemetry/page/actions/play.js
diff --git a/tools/telemetry/telemetry/page/actions/play.js b/tools/telemetry/telemetry/page/actions/play.js
index 80e42c42f6e25e9bd3a8d8026e97f75f5761010f..c646d78ad7a0e7b31c26d676eae33e36cd7941ec 100644
--- a/tools/telemetry/telemetry/page/actions/play.js
+++ b/tools/telemetry/telemetry/page/actions/play.js
@@ -21,16 +21,9 @@
   }
 
   function playHTML5Element(element) {
-    function logEventHappened(e) {
-      element[e.type + '_completed'] = true;
-    }
-    function onError(e) {
-      throw new Error('Error playing media :' + e.type);
-    }
-    element.addEventListener('playing', logEventHappened);
-    element.addEventListener('ended', logEventHappened);
-    element.addEventListener('error', onError);
-    element.addEventListener('abort', onError);
+    window.__registerHTML5ErrorEvents(element);
+    window.__registerHTML5EventCompleted(element, 'playing');
+    window.__registerHTML5EventCompleted(element, 'ended');
 
     var willPlayEvent = document.createEvent('Event');
     willPlayEvent.initEvent('willPlay', false, false);