[Telemetry] Remove is_smooth flag.

tools/perf/measurements/smooth_gesture_util_unittest.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 time
 import unittest
 
 from measurements import smooth_gesture_util as sg_util
 from telemetry import decorators
 from telemetry.core.platform import tracing_category_filter
 from telemetry.core.platform import tracing_options
@@ skipping 85 matching lines @@
     self.assertEquals(adjusted_record_6.end, 25)
     self.assertTrue(adjusted_record_6 is not record_6)
 
 
 class ScrollingPage(page_module.Page):
   def __init__(self, url, page_set, base_dir):
     super(ScrollingPage, self).__init__(url, page_set, base_dir)
 
   def RunPageInteractions(self, action_runner):
     interaction = action_runner.BeginGestureInteraction(
-        'ScrollAction', is_smooth=True)
+        'ScrollAction')
     # Add 0.5s gap between when Gesture records are issued to when we actually
     # scroll the page.
     time.sleep(0.5)
     action_runner.ScrollPage()
     time.sleep(0.5)
     interaction.End()
 
 
 class SmoothGestureTest(page_test_test_case.PageTestTestCase):
   @decorators.Disabled('mac')  # crbug.com/450171.
@@ skipping 34 matching lines @@
     adjusted_smooth_gesture = (
       sg_util.GetAdjustedInteractionIfContainGesture(
         timeline_model, smooth_record))
     # Test that the scroll gesture starts at at least 500ms after the start of
     # the interaction record and ends at at least 500ms before the end of
     # interaction record.
     self.assertLessEqual(
       500, adjusted_smooth_gesture.start - smooth_record.start)
     self.assertLessEqual(
       500, smooth_record.end - adjusted_smooth_gesture.end)