Fix import order with isort tool.

tools/telemetry/telemetry/page/actions/seek_unittest.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.core import util
 from telemetry.page.actions import seek
 from telemetry.unittest import tab_test_case
 
-
 AUDIO_1_SEEKED_CHECK = 'window.__hasEventCompleted("#audio_1", "seeked");'
 VIDEO_1_SEEKED_CHECK = 'window.__hasEventCompleted("#video_1", "seeked");'
 
 
 class SeekActionTest(tab_test_case.TabTestCase):
 
   def setUp(self):
     tab_test_case.TabTestCase.setUp(self)
     self.Navigate('video_test.html')
 
@@ skipping 33 matching lines @@
     self.assertTrue(self._tab.EvaluateJavaScript(AUDIO_1_SEEKED_CHECK))
 
   def testSeekWaitForSeekTimeout(self):
     """Tests that wait_for_seeked timeouts if video does not seek."""
     action = seek.SeekAction(seconds=1, selector='#video_1',
                              timeout_in_seconds=1)
     action.WillRunAction(self._tab)
     self._tab.EvaluateJavaScript('document.getElementById("video_1").src = ""')
     self.assertFalse(self._tab.EvaluateJavaScript(VIDEO_1_SEEKED_CHECK))
     self.assertRaises(util.TimeoutException, action.RunAction, self._tab)