Add loading mobile story set

tools/perf/benchmarks/page_cycler_v2.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.
 
 """The page cycler v2.
 
 For details, see design doc:
 https://docs.google.com/document/d/1EZQX-x3eEphXupiX-Hq7T4Afju5_sIdxPWYetj7ynd0
 """
 
@@ skipping 197 matching lines @@
   set, without running in out-of-process iframes mode.. """
   page_set = page_sets.OopifBasicPageSet
 
   @classmethod
   def Name(cls):
     return 'page_cycler_v2.basic_oopif'
 
   def CreateStorySet(self, options):
     return page_sets.OopifBasicPageSet(cache_temperatures=[
           cache_temperature.PCV1_COLD, cache_temperature.PCV1_WARM])
+
+
+class PageCyclerV2LoadingMobile(_PageCyclerV2):
+  """ A benchmark measuring loading performance of mobile sites. """
+
+  @classmethod
+  def Name(cls):
+    return 'page_cycler_v2.loading_mobile'

[nednguyen, 2016/09/27 15:36:01]

I am not sure if we should keep the page_cycler_v2 branding. I am thinking about
naming this "loading.mobile" to make it clearer for people who are new to our
benchmarks system.

Wdyt?

[kouhei (in TOK), 2016/09/27 22:37:21]

sgtm

[nednguyen, 2016/09/29 13:28:35]

Let's move this to tools/perf/benchmarks/loading.py and name it "loading.mobile"

[Kunihiko Sakamoto, 2016/09/30 05:17:12]

Done.
Is it OK that loading.LoadingMobile inherits page_cycler_v2.PageCyclerV2?

+
+  def CreateStorySet(self, options):
+    return page_sets.LoadingMobileStorySet(cache_temperatures=[
+          cache_temperature.PCV1_COLD, cache_temperature.PCV1_WARM])