Adding a test for measuring memory usage.

tools/telemetry/telemetry/compound_interaction.py

Index: tools/telemetry/telemetry/compound_interaction.py
diff --git a/tools/telemetry/telemetry/compound_interaction.py b/tools/telemetry/telemetry/compound_interaction.py
index 2ff48b036dbe2c7da56291ec6de5a0a9061f2c96..cdbdc97d7997e7b29281a5586ea244220ef2319b 100644
--- a/tools/telemetry/telemetry/compound_interaction.py
+++ b/tools/telemetry/telemetry/compound_interaction.py
@@ -6,12 +6,18 @@ from telemetry import page_interaction
 class CompoundInteraction(page_interaction.PageInteraction):
   def __init__(self, attributes=None):
     super(CompoundInteraction, self).__init__(attributes)
-
-  def PerformInteraction(self, page, tab):
+    self._interaction_list = []
     for interaction_data in self.actions:
       interaction = page_interaction.FindClassWithName(
           interaction_data['action'])(interaction_data)
-      interaction.PerformInteraction(page, tab)
+      self._interaction_list.append(interaction)
 
+  def CustomizeBrowserOptions(self, options):
+    for interaction in self._interaction_list:
+      interaction.CustomizeBrowserOptions(options)
+
+  def PerformInteraction(self, page, tab):
+    for interaction in self._interaction_list:
+      interaction.PerformInteraction(page, tab)
 
 page_interaction.RegisterClass('compound', CompoundInteraction)