[Telemetry] Remove is_smooth flag.

tools/perf/page_sets/tough_compositor_cases.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.
 from telemetry.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 class ToughCompositorPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(ToughCompositorPage, self).__init__(
         url=url, page_set=page_set, credentials_path = 'data/credentials.json')
     self.user_agent_type = 'mobile'
     self.archive_data_file = 'data/tough_compositor_cases.json'
 
   def RunNavigateSteps(self, action_runner):
     super(ToughCompositorPage, self).RunNavigateSteps(action_runner)
     # TODO(epenner): Remove this wait (http://crbug.com/366933)
     action_runner.Wait(5)
 
 class ToughCompositorScrollPage(ToughCompositorPage):
 
   def __init__(self, url, page_set):
     super(ToughCompositorScrollPage, self).__init__(url=url, page_set=page_set)
 
   def RunPageInteractions(self, action_runner):
     # Make the scroll longer to reduce noise.
     interaction = action_runner.BeginGestureInteraction(
-        'ScrollAction', is_smooth=True)
+        'ScrollAction')
     action_runner.ScrollPage(direction='down', speed_in_pixels_per_second=300)
     interaction.End()
 
 class ToughCompositorWaitPage(ToughCompositorPage):
 
   def __init__(self, url, page_set):
     super(ToughCompositorWaitPage, self).__init__(url=url, page_set=page_set)
 
   def RunPageInteractions(self, action_runner):
     # We scroll back and forth a few times to reduce noise in the tests.
@@ skipping 30 matching lines @@
       'http://jsbin.com/beqojupo/1/quiet?JS_FULL_SCREEN_INVALIDATION',
       # Why: Creates a large number of new tilings """
       'http://jsbin.com/covoqi/1/quiet?NEW_TILINGS',
     ]
 
     for url in scroll_urls_list:
       self.AddUserStory(ToughCompositorScrollPage(url, self))
 
     for url in wait_urls_list:
       self.AddUserStory(ToughCompositorWaitPage(url, self))