Fix navigation to unittest files

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
-from telemetry.unittest import test
 
 
 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._browser.SetHTTPServerDirectories(util.GetUnittestDataDir())
-    self._tab.Navigate(self._browser.http_server.UrlOf('video_test.html'))
-    self._tab.WaitForDocumentReadyStateToBeComplete()
+    self.Navigate('video_test.html')
 
-  @test.Disabled('chromeos')
   def testSeekWithNoSelector(self):
     """Tests that with no selector Seek  action seeks first media element."""
     data = {'wait_for_seeked': True, 'seek_time': 1}
     action = seek.SeekAction(data)
     action.WillRunAction(None, self._tab)
     action.RunAction(None, self._tab, None)
     # Assert only first video has played.
     self.assertTrue(self._tab.EvaluateJavaScript(VIDEO_1_SEEKED_CHECK))
     self.assertFalse(self._tab.EvaluateJavaScript(AUDIO_1_SEEKED_CHECK))
 
-  @test.Disabled('chromeos')
   def testSeekWithVideoSelector(self):
     """Tests that Seek action seeks video element matching selector."""
     data = {'selector': '#video_1', 'wait_for_seeked': True, 'seek_time': 1}
     action = seek.SeekAction(data)
     action.WillRunAction(None, self._tab)
     # Both videos not playing before running action.
     self.assertFalse(self._tab.EvaluateJavaScript(VIDEO_1_SEEKED_CHECK))
     self.assertFalse(self._tab.EvaluateJavaScript(AUDIO_1_SEEKED_CHECK))
     action.RunAction(None, self._tab, None)
     # Assert only video matching selector has played.
     self.assertTrue(self._tab.EvaluateJavaScript(VIDEO_1_SEEKED_CHECK))
     self.assertFalse(self._tab.EvaluateJavaScript(AUDIO_1_SEEKED_CHECK))
 
-  @test.Disabled('chromeos')
   def testSeekWithAllSelector(self):
     """Tests that Seek action seeks all video elements with selector='all'."""
     data = {'selector': 'all', 'wait_for_seeked': True, 'seek_time': 1}
     action = seek.SeekAction(data)
     action.WillRunAction(None, self._tab)
     # Both videos not playing before running action.
     self.assertFalse(self._tab.EvaluateJavaScript(VIDEO_1_SEEKED_CHECK))
     self.assertFalse(self._tab.EvaluateJavaScript(AUDIO_1_SEEKED_CHECK))
     action.RunAction(None, self._tab, None)
     # Assert all media elements played.
     self.assertTrue(self._tab.EvaluateJavaScript(VIDEO_1_SEEKED_CHECK))
     self.assertTrue(self._tab.EvaluateJavaScript(AUDIO_1_SEEKED_CHECK))
 
-  @test.Disabled('chromeos')   # http://crbug.com/273887
   def testSeekWaitForSeekTimeout(self):
     """Tests that wait_for_seeked timeouts if video does not seek."""
     data = {'selector': '#video_1',
             'wait_for_seeked': True,
             'wait_timeout': 1,
             'seek_time': 1}
     action = seek.SeekAction(data)
     action.WillRunAction(None, 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, None, self._tab,
                       None)
 
   def testSeekWithoutSeekTime(self):
     """Tests that seek action fails with no seek time."""
     data = {'wait_for_seeked': True}
     action = seek.SeekAction(data)
     action.WillRunAction(None, self._tab)
     self.assertRaises(AssertionError, action.RunAction, None, self._tab,
                       None)