Simulate interactivity boost for simulated user input events

telemetry/telemetry/internal/platform/platform_backend.py

Index: telemetry/telemetry/internal/platform/platform_backend.py
diff --git a/telemetry/telemetry/internal/platform/platform_backend.py b/telemetry/telemetry/internal/platform/platform_backend.py
index d099940fc7853de49911aa7d997253cb492eb05a..4e24789e0d0d67c163bc86a4b09a14547bf04dff 100644
--- a/telemetry/telemetry/internal/platform/platform_backend.py
+++ b/telemetry/telemetry/internal/platform/platform_backend.py
@@ -305,3 +305,17 @@ class PlatformBackend(object):
 
   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