Add a new telemetry benchmark to stress-test WebRTC.

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/'
 WEBRTC_GITHUB_SAMPLES_URL = 'https://webrtc.github.io/samples/src/content/'
 MEDIARECORDER_GITHUB_URL = 'https://rawgit.com/cricdecyan/mediarecorder/master/'
 
 
 class WebrtcPage(page_module.Page):
 
   def __init__(self, url, page_set, name):
     super(WebrtcPage, self).__init__(
         url=url, page_set=page_set, name=name)
 
@@ skipping 126 matching lines @@
         page_set=page_set)
 
   def RunPageInteractions(self, action_runner):
     with action_runner.CreateInteraction('Action_Canvas_PeerConnection',
                                          repeatable=False):
       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__(
+        url= WEBRTC_TEST_PAGES_URL + 'multiple-peerconnections/',

[sullivan, 2016/11/01 12:39:23]

Has this already been added to cloud storage?

[ehmaldonado_chromium, 2016/11/01 13:27:26]

It has now.
Thanks :)

+        name='multiple_peerconnections',
+        page_set=page_set)
+
+  def RunPageInteractions(self, action_runner):
+    with action_runner.CreateInteraction('Action_Create_PeerConnection',
+                                         repeatable=False):
+      action_runner.ExecuteJavaScript(
+          'document.getElementById("peer-connections-input").value=15')

[ehmaldonado_chromium, 2016/10/31 16:29:19]

I couldn't figure out how to set the slider or the text input.

[sullivan, 2016/11/01 12:39:23]

Should there be a comment in the code explaining a bit more here? (I don't have
the context to know what the slider or text input are supposed to do)

[ehmaldonado_chromium, 2016/11/01 13:27:26]

Done. This is supposed to set the number of peer connections to create in the
test page.

+      action_runner.ClickElement('button[id="start-test-button"]')
+      action_runner.Wait(45)
+
+
 class WebrtcGetusermediaPageSet(story.StorySet):
   """WebRTC tests for local getUserMedia: video capture and playback."""
 
   def __init__(self):
     super(WebrtcGetusermediaPageSet, self).__init__(
         archive_data_file='data/webrtc_getusermedia_cases.json',
         cloud_storage_bucket=story.PUBLIC_BUCKET)
 
     self.AddStory(Page1(self))
 
 
+class WebrtcStresstestPageSet(story.StorySet):
+  """WebRTC stress-testing with multiple peer connections."""
+
+  def __init__(self):
+    super(WebrtcStresstestPageSet, self).__init__(
+        archive_data_file='data/webrtc_stresstest_cases.json',
+        cloud_storage_bucket=story.PUBLIC_BUCKET)
+
+    self.AddStory(Page9(self))
+
+
 class WebrtcPeerconnectionPageSet(story.StorySet):
   """WebRTC tests for Real-time video and audio communication."""
 
   def __init__(self):
     super(WebrtcPeerconnectionPageSet, self).__init__(
         archive_data_file='data/webrtc_peerconnection_cases.json',
         cloud_storage_bucket=story.PUBLIC_BUCKET)
 
     self.AddStory(Page2(self))
 
@@ skipping 26 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))