Simulate interactivity boost for simulated user input events

telemetry/telemetry/internal/actions/action_runner.py

 # Copyright 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.
 
 import logging
 import time
 import urlparse
 
 from telemetry.core import exceptions
 from telemetry.internal.actions.drag import DragAction
@@ skipping 34 matching lines @@
   def __init__(self, tab, skip_waits=False):
     self._tab = tab
     self._skip_waits = skip_waits
 
   @property
   def tab(self):
     """Returns the tab on which actions are performed."""
     return self._tab
 
   def _RunAction(self, action):
-    action.WillRunAction(self._tab)
-    action.RunAction(self._tab)
+    try:
+      if action.SimulatesUserInput():
+        self._tab.browser.SetInteractivityBoost(True)
+      action.WillRunAction(self._tab)
+      action.RunAction(self._tab)
+    finally:
+      if action.SimulatesUserInput():
+        self._tab.browser.SetInteractivityBoost(False)
 
   def CreateInteraction(self, label, repeatable=False):
     """ Create an action.Interaction object that issues interaction record.
 
     An interaction record is a labeled time period containing
     interaction that developers care about. Each set of metrics
     specified in flags will be calculated for this time period.
 
     To mark the start of interaction record, call Begin() method on the returned
     object. To mark the finish of interaction record, call End() method on
@@ skipping 785 matching lines @@
         marker=timeline_interaction_record.GetJavaScriptMarker(
             self._label, self._flags))
 
   def End(self):
     assert self._started
     self._started = False
     self._action_runner.ExecuteJavaScript(
         'console.timeEnd({{ marker }});',
         marker=timeline_interaction_record.GetJavaScriptMarker(
             self._label, self._flags))