Revert 182991

tools/telemetry/telemetry/test/tab_test_case.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 unittest
-
-from telemetry.core import browser_finder
-from telemetry.test import options_for_unittests
-
-class TabTestCase(unittest.TestCase):
-  def __init__(self, *args):
-    self._extra_browser_args = []
-    super(TabTestCase, self).__init__(*args)
-
-  def setUp(self):
-    self._browser = None
-    self._tab = None
-    options = options_for_unittests.GetCopy()
-
-    self.CustomizeBrowserOptions(options)
-
-    if self._extra_browser_args:
-      for arg in self._extra_browser_args:
-        options.extra_browser_args.append(arg)
-
-    browser_to_create = browser_finder.FindBrowser(options)
-    if not browser_to_create:
-      raise Exception('No browser found, cannot continue test.')
-    try:
-      self._browser = browser_to_create.Create()
-      self._tab = self._browser.tabs[0]
-    except:
-      self.tearDown()
-      raise
-
-  def tearDown(self):
-    if self._tab:
-      self._tab.Disconnect()
-    if self._browser:
-      self._browser.Close()
-
-  def CustomizeBrowserOptions(self, options):
-    """Override to add test-specific options to the BrowserOptions object"""
-    pass