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

tools/perf/benchmarks/page_cycler_oopif.py

+# 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.
+
+from measurements import page_cycler
+import page_sets
+from telemetry import benchmark
+
+class _PageCycler(benchmark.Benchmark):
+  options = {'pageset_repeat': 1}
+
+  @classmethod
+  def Name(cls):
+    return 'page_cycler_oopif'
+
+  @classmethod
+  def AddBenchmarkCommandLineArgs(cls, parser):
+    parser.add_option('--report-speed-index',
+        action='store_true',
+        help='Enable the speed index metric.')
+
+    parser.add_option('--cold-load-percent', type='int', default=50,
+                      help='%d of page visits for which a cold load is forced')
+
+  def CustomizeBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs(['--site-per-process'])

[sullivan, 2015/02/28 15:25:46]

I'd prefer to just move PageCyclerOopifTypical25 to page_cycler.py, make it
sublclass the _PageCycler class there, and just override CustomizeBrowserOptions
in the PageCyclerOopifTypical25 class. That way:

- It's clearer what the difference between this and other page cyclers is
- If anything changes in the other _PageCycler class, don't have to copy/paste
it here.

[nasko, 2015/03/02 18:06:55]

Done.

+
+  def CreatePageTest(self, options):
+    return page_cycler.PageCycler(
+        page_repeat = options.page_repeat,
+        pageset_repeat = options.pageset_repeat,
+        cold_load_percent = options.cold_load_percent,
+        report_speed_index = options.report_speed_index)
+
+
+# crbug.com/273986: This test is really flakey on xp.
+@benchmark.Disabled('win')

[sullivan, 2015/02/28 15:25:46]

Can use @benchmark.Disabled('xp') if that is a better fit. But it looks like
after this comment was written in page_cycler.py, there were timeouts on our
win7 perfbots, too. So maybe "flakey on windows"? (If you're moving this to
page_cycler.py, please update the comment you copy/pasted from as well!)

[nasko, 2015/03/02 18:06:55]

Done.

+class PageCyclerOopifTypical25(_PageCycler):
+  @classmethod
+  def Name(cls):
+    return 'page_cycler_oopif.typical_25'
+
+  def CreatePageSet(self, options):
+    return page_sets.Typical25PageSet(run_no_page_interactions=True)