Add System health stories for Emerging market

tools/perf/page_sets/system_health/media_stories.py

 # Copyright 2016 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.
 
 from page_sets.system_health import platforms
+from page_sets.system_health import story_tags
 from page_sets.system_health import system_health_story
 
 from page_sets.login_helpers import google_login
 from page_sets.login_helpers import pandora_login
 
 from telemetry import benchmark
 from telemetry import decorators
 
 
-class _MediaStory(system_health_story.SystemHealthStory):
+class _PlayMediaStory(system_health_story.SystemHealthStory):
   """Abstract base class for media System Health user stories."""
 
   ABSTRACT_STORY = True
   SUPPORTED_PLATFORMS = platforms.DESKTOP_ONLY
   PLAY_DURATION = 20
   PLAY_SELECTOR = NotImplemented
   STOP_SELECTOR = NotImplemented
   TIME_SELECTOR = NotImplemented
 
   def RunPageInteractions(self, action_runner):
@@ skipping 19 matching lines @@
           self.PLAY_DURATION - self._GetTimeInSeconds(action_runner))
 
   def _GetTimeInSeconds(self, action_runner):
     minutes, seconds = action_runner.EvaluateJavaScript(
         'document.querySelector({{ selector }}).textContent',
         selector=self.TIME_SELECTOR).split(':')
     return int(minutes * 60 + seconds)
 
 
 ################################################################################
-# Audio stories.
+# Audio and video stories.
 ################################################################################
 
 
 @benchmark.Disabled('all')  # crbug.com/649392
-class GooglePlayMusicDesktopStory(_MediaStory):
+class GooglePlayMusicDesktopStory(_PlayMediaStory):
   NAME = 'play:media:google_play_music'
   URL = 'https://music.google.com'
 
   PLAY_SELECTOR = '.x-scope.paper-fab-0'
   STOP_SELECTOR = '.style-scope.sj-play-button'
   TIME_SELECTOR = '#time-container-current'
   SEARCH_SELECTOR = '.title.fade-out.tooltip'
   NAVIGATE_SELECTOR = '.description.tooltip.fade-out'
 
   def _Login(self, action_runner):
     google_login.LoginGoogleAccount(action_runner, 'googletest',
                                     self.credentials_path)
 
   def _NavigateToMedia(self, action_runner):
     # Clicks on Today's top hits.
     action_runner.Wait(1)  # Add 1 second wait to make the browsing realistic.
     self._WaitForAndClickElementBySelector(action_runner, self.SEARCH_SELECTOR)
     # Clicks on playlist.
     action_runner.Wait(1)  # Add 1 second wait to make the browsing realistic.
     self._WaitForAndClickElementBySelector(action_runner,
                                            self.NAVIGATE_SELECTOR)
 
 
 @benchmark.Disabled('win')  # crbug.com/649392
-class SoundCloudDesktopStory(_MediaStory):
+class SoundCloudDesktopStory(_PlayMediaStory):
   NAME = 'play:media:soundcloud'
   URL = 'https://soundcloud.com'
 
   PLAY_SELECTOR = '.sc-button-play.playButton.sc-button.sc-button-xlarge'
   STOP_SELECTOR = '.playControl.playControls__icon.sc-ir.playing'
   TIME_SELECTOR = '.playbackTimeline__timePassed>span[aria-hidden=true]'
   SEARCH_SELECTOR = '.headerSearch'
   SEARCH_QUERY = 'SSmooth Jazz'  # First S for some reason gets ommited.
 
   def _NavigateToMedia(self, action_runner):
     self._WaitForAndClickElementBySelector(action_runner, self.SEARCH_SELECTOR)
     action_runner.Wait(1)  # Add 1 second wait to make the browsing realistic.
     action_runner.EnterText(self.SEARCH_QUERY)
     action_runner.PressKey('Return')
 
 
 @decorators.Disabled('all')  # crbug.com/649392
-class PandoraDesktopStory(_MediaStory):
+class PandoraDesktopStory(_PlayMediaStory):
   NAME = 'play:media:pandora'
   URL = 'https://pandora.com'
 
   PLAY_SELECTOR = None
   STOP_SELECTOR = '.pauseButton'
   TIME_SELECTOR = '.elapsedTime'
   SEARCH_SELECTOR = '.searchInput'
 
   def _Login(self, action_runner):
     pandora_login.LoginAccount(action_runner, 'pandora', self.credentials_path)
 
   def _NavigateToMedia(self, action_runner):
     pass  # Audio autoplays on Pandora, no need to search.
+
+
+class YoutubeMobileStory(_PlayMediaStory):

[nednguyen, 2017/04/11 22:24:10]

Also add docstring describe what this story is doing.

[ssid, 2017/04/13 21:08:53]

removed this story for now.

+  NAME = 'browse:media:youtube'
+  URL = 'https://m.youtube.in/watch?v=OnhXkCPMeMc'
+  SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
+  TAGS = [story_tags.EMERGING_MARKET]
+
+  PLAYER_FUNCTION = 'document.getElementById("player")'
+  STOP_FUNCTION = 'document.getElementsByTagName("video")[0].pause()'
+  TIME_FUNCTION = 'document.getElementsByTagName("video")[0].currentTime'
+
+  def RunPageInteractions(self, action_runner):
+    app_ui = action_runner.tab.browser.app_ui
+    action_runner.WaitForElement(element_function=self.PLAYER_FUNCTION)
+
+    # Simulate user click in system ui since youtube play can be initialied only
+    # by user gesture.
+    renderer_view_id = 'compositor_view_holder'
+    app_ui.WaitForUiNode(resource_id=renderer_view_id)
+    renderer_view = app_ui.GetUiNode(resource_id=renderer_view_id)
+    # Click on the top half of the renderer view to start video.
+    shifted_center = 0.5 * (
+        renderer_view.bounds.center + renderer_view.bounds.top_left)
+    renderer_view.Tap(point=shifted_center)
+
+    self._WaitForPlayTime(action_runner)
+    action_runner.EvaluateJavaScript(self.STOP_FUNCTION)
+    self._Measure(action_runner)
+
+  def _GetTimeInSeconds(self, action_runner):
+    return int(action_runner.EvaluateJavaScript(self.TIME_FUNCTION))
+
+  def _NavigateToMedia(self, action_runner):
+    pass # Users usually open youtube links directly, skip searching.