Adding media browsing benchmark.

tools/perf/page_sets/browse_media_stories.py

Index: tools/perf/page_sets/browse_media_stories.py
diff --git a/tools/perf/page_sets/browse_media_stories.py b/tools/perf/page_sets/browse_media_stories.py
new file mode 100644
index 0000000000000000000000000000000000000000..41d5a12a60e11fc5be9dd01b411db6be53479dee
--- /dev/null
+++ b/tools/perf/page_sets/browse_media_stories.py
@@ -0,0 +1,161 @@
+# 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.
+
+import sys
+
+from telemetry.page import page
+
+from telemetry.core import discover
+from telemetry import story
+
+_ALL_PLATFORMS = frozenset({'desktop', 'mobile'})
+_DESKTOP_ONLY = frozenset({'desktop'})
+_MOBILE_ONLY = frozenset({'mobile'})
+_MEDIA_VIEW_TIME_IN_SECONDS = 3
+
+class _BrowseMediaStory(page.Page):
+  """Abstract base class for browse media user stories.
+
+  A browse media story emulates browsing a media website:
+  1. Load a media page (image, video, etc.).
+  2. Click on the next item to load the next media page.
+  3. etc.
+  """
+  NAME = NotImplemented
+  URL = NotImplemented
+  SUPPORTED_PLATFORMS = _ALL_PLATFORMS
+  BROWSE_MEDIA_ITEM_SELECTOR = NotImplemented
+  BROWSE_MEDIA_ITEMS_TO_VISIT = 20
+
+  def __init__(self, story_set):
+    super(_BrowseMediaStory, self).__init__(
+        page_set=story_set, name=self.NAME, url=self.URL)
+
+  def _BrowseMediaItem(self, index):
+    return 'document.querySelectorAll(\'%s\')[%d]' % (
+        self.BROWSE_MEDIA_ITEM_SELECTOR, index)
+
+  def _NavigateBack(self, action_runner):
+    action_runner.ExecuteJavaScript('window.history.back()')
+
+  def _Login(self, action_runner):
+    pass
+
+  def _DidLoadDocument(self, action_runner):
+    pass
+
+  def _WaitForNavigationToBrowseMediaItem(self, action_runner):
+    action_runner.WaitForNavigate()
+
+  def _WaitForNavigationFromBrowseMediaItem(self, action_runner):
+    action_runner.WaitForNavigate()
+
+  def RunNavigateSteps(self, action_runner):
+    self._Login(action_runner)
+    super(_BrowseMediaStory, self).RunNavigateSteps(action_runner)
+
+  def RunPageInteractions(self, action_runner):
+    action_runner.tab.WaitForDocumentReadyStateToBeComplete()
+    self._DidLoadDocument(action_runner)
+    for i in xrange(self.BROWSE_MEDIA_ITEMS_TO_VISIT):
+      action_runner.WaitForElement(
+          element_function=self._BrowseMediaItem(self._ItemSelector(i)))
+      action_runner.Wait(_MEDIA_VIEW_TIME_IN_SECONDS)
+      action_runner.ClickElement(
+          element_function=self._BrowseMediaItem(self._ItemSelector(i)))
+
+def IterAllStoryClasses():
+  # Sort the classes by their names so that their order is stable and
+  # deterministic.
+  for unused_cls_name, cls in sorted(discover.DiscoverClassesInModule(
+      module=sys.modules[__name__],
+      base_class=_BrowseMediaStory,
+      index_by_class_name=True).iteritems()):
+    yield cls
+
+################################################################################
+# Browse media stories.
+################################################################################
+
+class YoutubeBrowseMediaMobileStory(_BrowseMediaStory):
+  NAME = 'youtube-browse-media'
+  URL = 'https://youtube.com/watch?v=b6hoBp7Hk-A'
+  BROWSE_MEDIA_ITEM_SELECTOR = '._mhf > a'
+  SUPPORTED_PLATFORMS = _MOBILE_ONLY
+  def _ItemSelector(self, iteration):
+    return iteration % 3
+
+class YoutubeBrowseMediaDesktopStory(_BrowseMediaStory):
+  NAME = 'youtube-browse-media'
+  URL = 'https://www.youtube.com/watch?v=Ic07xTJoP34'
+  BROWSE_MEDIA_ITEM_SELECTOR = '.yt-uix-simple-thumb-related'
+  SUPPORTED_PLATFORMS = _DESKTOP_ONLY
+  def _ItemSelector(self, iteration):
+    return iteration % 3
+
+class FacebookBrowseMediaMobileStory(_BrowseMediaStory):
+  NAME = 'facebook-browse-media'
+  URL = ("https://facebook.com/photo.php?fbid=10154398154450513&"
+         "id=255110695512&set=a.406278500512.172778.255110695512&"
+         "source=54&refid=13")
+  BROWSE_MEDIA_ITEM_SELECTOR = '._57-p > a'
+  SUPPORTED_PLATFORMS = _MOBILE_ONLY
+  def _ItemSelector(self, _):
+    return 1
+
+class ImgurBrowseMediaMobileStory(_BrowseMediaStory):
+  NAME = 'imgur-browse-media'
+  URL = 'http://imgur.com/gallery/e6gPQ'
+  BROWSE_MEDIA_ITEM_SELECTOR = '.Navbar-customAction'
+  SUPPORTED_PLATFORMS = _MOBILE_ONLY
+  def _ItemSelector(self, _):
+    return 0
+
+class ImgurBrowseMediaDesktopStory(_BrowseMediaStory):
+  NAME = 'imgur-browse-media'
+  URL = 'http://imgur.com/gallery/e6gPQ'
+  BROWSE_MEDIA_ITEM_SELECTOR = '.navNext'
+  SUPPORTED_PLATFORMS = _DESKTOP_ONLY
+  def _ItemSelector(self, _):
+    return 0
+
+class FlickrBrowseMediaMobileStory(_BrowseMediaStory):
+  NAME = 'flickr-browse-media'
+  URL = ("https://www.flickr.com/photos/133058989@N03/27995559671/in/"
+         "explore-2016-07-04#")
+  BROWSE_MEDIA_ITEM_SELECTOR = '.next-photo'
+  SUPPORTED_PLATFORMS = _MOBILE_ONLY
+  def _ItemSelector(self, _):
+    return 0
+
+class FlickrBrowseMediaStory(_BrowseMediaStory):
+  NAME = 'flickr-browse-media'
+  URL = ("https://www.flickr.com/photos/133058989@N03/27995559671/in/"
+         "explore-2016-07-04#")
+  BROWSE_MEDIA_ITEM_SELECTOR = '.navigate-target.navigate-next'
+  SUPPORTED_PLATFORMS = _DESKTOP_ONLY
+  def _ItemSelector(self, _):
+    return 0
+
+################################################################################
+# Browse media story sets.
+################################################################################
+
+class _BrowseMediaStorySet(story.StorySet):
+  PLATFORM = NotImplemented
+
+  def __init__(self):
+    super(_BrowseMediaStorySet, self).__init__(
+        archive_data_file=('../data/browse_media_%s.json' % self.PLATFORM),
+        cloud_storage_bucket=story.PARTNER_BUCKET)
+    for story_class in IterAllStoryClasses():
+      if self.PLATFORM not in story_class.SUPPORTED_PLATFORMS:
+        continue
+      self.AddStory(story_class(self))
+
+class DesktopBrowseMediaStorySet(_BrowseMediaStorySet):
+  PLATFORM = 'desktop'
+
+class MobileBrowseMediaStorySet(_BrowseMediaStorySet):
+  PLATFORM = 'mobile'