Add a new benchmark for cpu power measurements on steady state sites.

tools/perf/page_sets/steady_state.py

Index: tools/perf/page_sets/steady_state.py
diff --git a/tools/perf/page_sets/steady_state.py b/tools/perf/page_sets/steady_state.py
new file mode 100644
index 0000000000000000000000000000000000000000..4c1ce4369fc635ae56455963d3ac79b0c3d6319f
--- /dev/null
+++ b/tools/perf/page_sets/steady_state.py
@@ -0,0 +1,17 @@
+# 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.
+from telemetry.page import page as page_module
+from telemetry import story
+
+
+class SteadyStateStorySet(story.StorySet):

[nednguyen, 2016/08/24 19:51:43]

Why create new story set & benchmark instead of add this page to existing one?

[erikchen, 2016/08/24 22:13:31]

Assuming this has low noise, I'm going to add another 40 or so WPR-ed pages to
this set. This is a different type of story set from trivial pages, which
doesn't use WPR, and is therefore an entire level of complexity simpler.

Separating this benchmark will also make it easier to view differences in noise
between these pages, and the trivial pages.

+  """Historically, Chrome has high steady-state CPU usage on these sites."""
+
+  def __init__(self):
+    super(SteadyStateStorySet, self).__init__(
+        archive_data_file='data/steady_state.json',
+        cloud_storage_bucket=story.PARTNER_BUCKET)
+    self.AddStory(page_module.Page(
+        'http://www.labradortraininghq.com/labrador-training/how-to-crate-train'
+        '-a-puppy/#How_Long_DoesIt_Take_To_Crate_Train_A_Puppy', page_set=self))