Adding a page cycler becnchmark for measuring out-of-process iframes.

tools/perf/benchmarks/page_cycler.py

 # Copyright 2013 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 measurements import page_cycler
 import page_sets
 from telemetry import benchmark
 
 
 class _PageCycler(benchmark.Benchmark):
@@ skipping 177 matching lines @@
 
   Recorded in July 2013.
   """
   page_set = page_sets.ToughLayoutCasesPageSet
 
   @classmethod
   def Name(cls):
     return 'page_cycler.tough_layout_cases'
 
 
-# crbug.com/273986: This test is really flakey on xp.
+# crbug.com/273986: This test is flakey on Windows.
 @benchmark.Disabled('win')
 class PageCyclerTypical25(_PageCycler):
   """Page load time benchmark for a 25 typical web pages.
 
   Designed to represent typical, not highly optimized or highly popular web
   sites. Runs against pages recorded in June, 2014.
   """
 
   @classmethod
   def Name(cls):
     return 'page_cycler.typical_25'
 
   def CreatePageSet(self, options):
     return page_sets.Typical25PageSet(run_no_page_interactions=True)
 
+# crbug.com/273986: This test is flakey on Windows.
+@benchmark.Disabled('win')
+class PageCyclerOopifTypical25(_PageCycler):
+  """ A varation of the benchmark above, but running in --site-per-process
+  to allow measuring performance of out-of-process iframes.
+  """
+  @classmethod
+  def Name(cls):
+    return 'page_cycler_oopif.typical_25'
+
+  def CustomizeBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs(['--site-per-process'])
+
+  def CreatePageSet(self, options):
+    return page_sets.Typical25PageSet(run_no_page_interactions=True)
 
 @benchmark.Disabled # crbug.com/443730
 class PageCyclerBigJs(_PageCycler):
   page_set = page_sets.BigJsPageSet
   @classmethod
   def Name(cls):
     return 'page_cycler.big_js'
-