Simulate interactivity boost for simulated user input events

telemetry/telemetry/internal/actions/pinch.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.
 
 from telemetry.internal.actions import page_action
 from telemetry.internal.actions import utils
 from telemetry.util import js_template
 
 
 class PinchAction(page_action.PageAction):
   def __init__(self, selector=None, text=None, element_function=None,
                left_anchor_ratio=0.5, top_anchor_ratio=0.5,
                scale_factor=None, speed_in_pixels_per_second=800,
                synthetic_gesture_source=page_action.GESTURE_SOURCE_DEFAULT):
     super(PinchAction, self).__init__()
     self._selector = selector
     self._text = text
     self._element_function = element_function
     self._left_anchor_ratio = left_anchor_ratio
     self._top_anchor_ratio = top_anchor_ratio
     self._scale_factor = scale_factor
     self._speed = speed_in_pixels_per_second
     self._synthetic_gesture_source = ('chrome.gpuBenchmarking.%s_INPUT' %
                                       synthetic_gesture_source)
 
     if (self._selector is None and self._text is None and
         self._element_function is None):
       self._element_function = 'document.body'
 
+  def SimulatesUserInput(self):
+    return True
+
   def WillRunAction(self, tab):
     utils.InjectJavaScript(tab, 'gesture_common.js')
     utils.InjectJavaScript(tab, 'pinch.js')
 
     # Fail if browser doesn't support synthetic pinch gestures.
     if not tab.EvaluateJavaScript('window.__PinchAction_SupportedByBrowser()'):
       raise page_action.PageActionNotSupported(
           'Synthetic pinch not supported for this browser')
 
     tab.ExecuteJavaScript("""
@@ skipping 25 matching lines @@
           });
         }''',
         left_anchor_ratio=self._left_anchor_ratio,
         top_anchor_ratio=self._top_anchor_ratio,
         scale_factor=scale_factor,
         speed=self._speed)
     page_action.EvaluateCallbackWithElement(
         tab, code, selector=self._selector, text=self._text,
         element_function=self._element_function)
     tab.WaitForJavaScriptCondition('window.__pinchActionDone', timeout=60)