telemetry: Add a page set for blink's memory usage measurement

tools/perf/page_sets/blink_memory_mobile.py

Index: tools/perf/page_sets/blink_memory_mobile.py
diff --git a/tools/perf/page_sets/blink_memory_mobile.py b/tools/perf/page_sets/blink_memory_mobile.py
new file mode 100644
index 0000000000000000000000000000000000000000..3c18085caf5003ccb88281b339eec0a0e13c2aee
--- /dev/null
+++ b/tools/perf/page_sets/blink_memory_mobile.py
@@ -0,0 +1,136 @@
+# Copyright 2015 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 logging
+
+from telemetry.page import page as page_module
+from telemetry.page import shared_page_state
+from telemetry import story
+
+from page_sets.login_helpers import google_login
+
+
+DUMP_WAIT_TIME = 3
+
+
+class BlinkMemoryMobilePage(page_module.Page):
+  def __init__(self, url, page_set, name):
+    super(BlinkMemoryMobilePage, self).__init__(
+        url=url, page_set=page_set, name=name,
+        shared_page_state_class=shared_page_state.SharedMobilePageState,
+        credentials_path='data/credentials.json')
+    self.archive_data_file = 'data/blink_memory_mobile.json'
+
+  def _DumpMemory(self, action_runner, phase):
+    with action_runner.CreateInteraction(phase):
+      action_runner.Wait(DUMP_WAIT_TIME)
+      action_runner.ForceGarbageCollection()
+      action_runner.Wait(DUMP_WAIT_TIME)
+      if not action_runner.tab.browser.DumpMemory():
+        logging.error('Unable to get a memory dump for %s.', self.name)
+
+  def RunPageInteractions(self, action_runner):
+    action_runner.ScrollPage()
+    self._DumpMemory(action_runner, 'scrolled')
+
+
+class TheVergePage(BlinkMemoryMobilePage):
+  COMMENT_LINK_SELECTOR = '.show_comments_link'
+
+  def __init__(self, page_set):
+    super(TheVergePage, self).__init__(
+        'http://www.theverge.com/2015/8/11/9133883/taylor-swift-spotify-discover-weekly-what-is-going-on',
+        page_set=page_set,
+        name='TheVerge')
+
+  def RunPageInteractions(self, action_runner):
+    action_runner.WaitForElement(selector=TheVergePage.COMMENT_LINK_SELECTOR)
+    action_runner.ExecuteJavaScript(
+        'window.location.hash = "comments"')
+    action_runner.TapElement(
+        selector=TheVergePage.COMMENT_LINK_SELECTOR)
+    action_runner.WaitForJavaScriptCondition(
+        'window.Chorus.Comments.collection.length > 0')
+    super(TheVergePage, self).RunPageInteractions(action_runner)
+
+
+class FacebookPage(BlinkMemoryMobilePage):
+  def __init__(self, page_set):
+    super(FacebookPage, self).__init__(
+        'https://facebook.com/barackobama',
+        page_set=page_set,
+        name='Facebook')
+
+  def RunNavigateSteps(self, action_runner):
+    super(FacebookPage, self).RunNavigateSteps(action_runner)
+    action_runner.WaitForJavaScriptCondition(
+        'document.getElementById("u_0_c") !== null &&'
+        'document.body.scrollHeight > window.innerHeight')
+
+
+class GmailPage(BlinkMemoryMobilePage):
+  def __init__(self, page_set):
+    super(GmailPage, self).__init__(
+        'https://mail.google.com/mail/',
+        page_set=page_set,
+        name='Gmail')
+
+  def RunNavigateSteps(self, action_runner):
+    google_login.LoginGoogleAccount(action_runner, 'google',
+                                    self.credentials_path)
+    super(GmailPage, self).RunNavigateSteps(action_runner)
+    # Needs to wait for navigation to handle redirects.
+    action_runner.WaitForNavigate()
+    action_runner.WaitForElement(selector='#apploadingdiv')
+    action_runner.WaitForJavaScriptCondition(
+        'document.querySelector("#apploadingdiv").style.opacity == "0"')
+
+
+class BlinkMemoryMobilePageSet(story.StorySet):
+  """Key mobile sites for Blink memory reduction."""
+
+  def __init__(self):
+    super(BlinkMemoryMobilePageSet, self).__init__(
+        archive_data_file='data/blink_memory_mobile.json',
+        cloud_storage_bucket=story.PARTNER_BUCKET)
+
+    # Why: High rate of Blink's memory consumption rate.
+    self.AddStory(BlinkMemoryMobilePage(
+        'https://www.pinterest.com',
+        page_set=self,
+        name='Pinterest'))
+    self.AddStory(FacebookPage(self))
+    # TODO(bashi): Enable TheVergePage. http://crbug.com/522381
+    # self.AddStory(TheVergePage(self))
+
+    # Why: High rate of Blink's memory comsumption rate on low-RAM devices.
+    self.AddStory(BlinkMemoryMobilePage(
+        'http://en.m.wikipedia.org/wiki/Wikipedia',
+        page_set=self,
+        name='Wikipedia (1 tab) - delayed scroll start',))
+    self.AddStory(BlinkMemoryMobilePage(
+        url='http://www.reddit.com/r/programming/comments/1g96ve',
+        page_set=self,
+        name='Reddit'))
+    self.AddStory(BlinkMemoryMobilePage(
+        'https://en.blog.wordpress.com/2012/09/04/freshly-pressed-editors-picks-for-august-2012/',
+        page_set=self,
+       name='Wordpress'))
+
+    # Why: Renderer memory usage is high.
+    self.AddStory(BlinkMemoryMobilePage(
+        'http://worldjournal.com/',
+        page_set=self,
+        name='Worldjournal'))
+
+    # Why: Key products.
+    self.AddStory(GmailPage(page_set=self))
+    self.AddStory(BlinkMemoryMobilePage(
+        'http://googlewebmastercentral.blogspot.com/2015/04/rolling-out-mobile-friendly-update.html?m=1',
+        page_set=self,
+        name='Blogger'))
+    self.AddStory(BlinkMemoryMobilePage(
+        'https://plus.google.com/app/basic/110031535020051778989/posts?source=apppromo',
+        page_set=self,
+        name='GooglePlus'))