Simulate interactivity boost for simulated user input events

telemetry/telemetry/internal/platform/platform_backend.py

 # Copyright 2013 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 weakref
 
 from battor import battor_wrapper
 from telemetry.internal import forwarders
 from telemetry.internal.forwarders import do_nothing_forwarder
 from telemetry.internal.platform import network_controller_backend
@@ skipping 287 matching lines @@
     Return:
       Whether the path exists on the target platform.
     """
     raise NotImplementedError()
 
   def HasBattOrConnected(self):
     return battor_wrapper.IsBattOrConnected(self.GetOSName())
 
   def WaitForBatteryTemperature(self, temp):
     pass
+
+  def SetInteractivityBoost(self, enable):
+    """On some platforms (e.g. ChromeOS), the kernel provides a frequency boost
+    to the CPUs when an input is received (e.g., keypress, touchpad event).
+    Page actions which simulate a user input therefore need to trigger the
+    same boost in order to accurately simulate normal behaviour.
+
+    This should be overridden by platforms which provide a frequency boost
+    in response to user input.
+
+    Args:
+      enable: turn boost on or off
+    """
+    pass