Adding a test for measuring memory usage.

tools/telemetry/telemetry/all_page_interactions.py

Index: tools/telemetry/telemetry/all_page_interactions.py
diff --git a/tools/telemetry/telemetry/all_page_interactions.py b/tools/telemetry/telemetry/all_page_interactions.py
new file mode 100644
index 0000000000000000000000000000000000000000..1e7d29f797c4b6fe6ae254285bed92e586f444f4
--- /dev/null
+++ b/tools/telemetry/telemetry/all_page_interactions.py
@@ -0,0 +1,20 @@
+# Copyright (c) 2012 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.
+import os
+
+from telemetry import discover
+from telemetry import page_interaction
+
+_page_interaction_classes = discover.Discover(os.path.dirname(__file__),
+                                              'interaction',
+                                              page_interaction.PageInteraction)
+
+def GetAllClasses():
+  return list(_page_interaction_classes.values())
+
+def FindClassWithName(name):
+  return _page_interaction_classes.get(name)
+
+def RegisterClassForTest(name, clazz):
+  _page_interaction_classes[name] = clazz