Wait until draw is defined in webrtc.webrtc_smoothness_tbmv2

tools/perf/page_sets/webrtc_cases.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 import os
 
 from telemetry import story
 from telemetry.page import page as page_module
 
 
 WEBRTC_TEST_PAGES_URL = 'https://test.webrtc.org/manual/'
@@ skipping 131 matching lines @@
   def __init__(self, page_set):
     canvas_capure_html = 'canvascapture/canvas_capture_peerconnection.html'
     super(Page8, self).__init__(
         url=MEDIARECORDER_GITHUB_URL + canvas_capure_html,
         name='canvas_capture_peer_connection',
         page_set=page_set)
 
   def RunPageInteractions(self, action_runner):
     with action_runner.CreateInteraction('Action_Canvas_PeerConnection',
                                          repeatable=False):
+      action_runner.Wait(10)

[nednguyen, 2017/03/16 16:12:35]

Please wait for until the draw command is defined instead. Don't just add 10s
wait like this because it bumps up the timing across all the machines.

       action_runner.ExecuteJavaScript('draw();')
       action_runner.ExecuteJavaScript('doCanvasCaptureAndPeerConnection();')
       action_runner.Wait(10)
 
 
 class Page9(WebrtcPage):
   """Why: Sets up several peerconnections in the same page."""
 
   def __init__(self, page_set):
     super(Page9, self).__init__(
@@ skipping 74 matching lines @@
 class WebrtcRenderingPageSet(story.StorySet):
   """WebRTC tests for video rendering."""
 
   def __init__(self):
     super(WebrtcRenderingPageSet, self).__init__(
         archive_data_file='data/webrtc_smoothness_cases.json',
         cloud_storage_bucket=story.PARTNER_BUCKET)
 
     self.AddStory(Page2(self))
     self.AddStory(Page8(self))