Revert 180117, it broke all telemetry tests.

tools/telemetry/telemetry/scrolling_action_unittest.py

 # Copyright (c) 2012 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 os
 
 from telemetry.page import Page
 from telemetry import scrolling_action
 from telemetry import tab_test_case
 
 class ScrollingActionTest(tab_test_case.TabTestCase):
   def CreateAndNavigateToPageFromUnittestDataDir(
     self, filename, page_attributes):
     unittest_data_dir = os.path.join(os.path.dirname(__file__),
                                      '..', 'unittest_data')
     self._browser.SetHTTPServerDirectory(unittest_data_dir)
     page = Page(
       self._browser.http_server.UrlOf(filename),
-      None, # In this test, we don't need a page set.
       attributes=page_attributes)
 
     self._tab.Navigate(page.url)
     self._tab.WaitForDocumentReadyStateToBeComplete()
 
     return page
 
   def testScrollingAction(self):
     page = self.CreateAndNavigateToPageFromUnittestDataDir(
         "blank.html",
@@ skipping 53 matching lines @@
         __ScrollingAction_GetBoundingVisibleRect(document.body).top +
         __ScrollingAction_GetBoundingVisibleRect(document.body).height"""))
     rect_right = int(self._tab.EvaluateJavaScript("""
         __ScrollingAction_GetBoundingVisibleRect(document.body).left +
         __ScrollingAction_GetBoundingVisibleRect(document.body).width"""))
     viewport_width = int(self._tab.EvaluateJavaScript('window.innerWidth'))
     viewport_height = int(self._tab.EvaluateJavaScript('window.innerHeight'))
 
     self.assertTrue(rect_bottom <= viewport_height)
     self.assertTrue(rect_right <= viewport_width)
+