telmetry: update InteractAction to use new timeline marker mechanism

tools/telemetry/telemetry/page/actions/interact.py

Index: tools/telemetry/telemetry/page/actions/interact.py
diff --git a/tools/telemetry/telemetry/page/actions/interact.py b/tools/telemetry/telemetry/page/actions/interact.py
index 222c3089c1916a0071c3a03767b9b553bc6ea7a4..f3d9447a430c9da7791cb9b2325afe44a225a499 100644
--- a/tools/telemetry/telemetry/page/actions/interact.py
+++ b/tools/telemetry/telemetry/page/actions/interact.py
@@ -7,13 +7,11 @@ from telemetry.page.actions import page_action
 class InteractAction(page_action.PageAction):
   def __init__(self, attributes=None):
     super(InteractAction, self).__init__(attributes)
+    self._SetTimelineMarkerBaseName('InteractAction::RunAction')
 
   def RunAction(self, page, tab, previous_action):
     tab.ExecuteJavaScript(
-        'console.time("' + self.TimelineMarkerLabel() + '")')
+        'console.time("' + self._GetUniqueTimelineMarkerName() + '")')
     raw_input("Interacting... Press Enter to continue.")
     tab.ExecuteJavaScript(
-        'console.timeEnd("' + self.TimelineMarkerLabel() + '")')
-
-  def TimelineMarkerLabel(self):
-    return 'InteractAction::RunAction'
+        'console.timeEnd("' + self._GetUniqueTimelineMarkerName() + '")')