Add support for python pageset

tools/telemetry/telemetry/page/actions/action_runner.py

Index: tools/telemetry/telemetry/page/actions/action_runner.py
diff --git a/tools/telemetry/telemetry/page/actions/action_runner.py b/tools/telemetry/telemetry/page/actions/action_runner.py
new file mode 100644
index 0000000000000000000000000000000000000000..36a7e10a5f7d99e7aa871c75a2f8ade7c8b65d18
--- /dev/null
+++ b/tools/telemetry/telemetry/page/actions/action_runner.py
@@ -0,0 +1,19 @@
+# Copyright (c) 2014 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.
+
+class ActionRunner(object):
+  def __init__(self, page, tab, page_test=None):
+    self._page = page
+    self._tab = tab
+    self._page_test = page_test
+
+  def RunAction(self, action):
+    action.WillRunAction(self._page, self._tab)
+    if self._page_test:
+      self._page_test.WillRunAction(self._page, self._tab, action)
+
+    action.RunAction(self._page, self._tab, None)
+
+    if self._page_test:
+      self._page_test.DidRunAction(self._page, self._tab, action)