Fix navigation to unittest files

tools/telemetry/telemetry/core/backends/chrome/inspector_console_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.
 
 import re
 import StringIO
 
-from telemetry import test
 from telemetry.core import util
 from telemetry.unittest import tab_test_case
 
 
 class TabConsoleTest(tab_test_case.TabTestCase):
-  @test.Disabled('chromeos')
   def testConsoleOutputStream(self):
-    self._browser.SetHTTPServerDirectories(util.GetUnittestDataDir())
-
     stream = StringIO.StringIO()
     self._tab.message_output_stream = stream
 
-    self._tab.Navigate(
-      self._browser.http_server.UrlOf('page_that_logs_to_console.html'))
-    self._tab.WaitForDocumentReadyStateToBeComplete()
+    self.Navigate('page_that_logs_to_console.html')
 
     initial = self._tab.EvaluateJavaScript('window.__logCount')
     def GotLog():
       current = self._tab.EvaluateJavaScript('window.__logCount')
       return current > initial
     util.WaitFor(GotLog, 5)
 
     lines = [l for l in stream.getvalue().split('\n') if len(l)]
 
     self.assertTrue(len(lines) >= 1)
     for line in lines:
       prefix = 'http://(.+)/page_that_logs_to_console.html:9'
       expected_line = 'At %s: Hello, world' % prefix
       self.assertTrue(re.match(expected_line, line))