Revert 215785 "[telemetry] Add a webdriver backend with support ..."

trunk/src/tools/telemetry/telemetry/core/backends/webdriver/webdriver_tab_list_backend.py

Index: trunk/src/tools/telemetry/telemetry/core/backends/webdriver/webdriver_tab_list_backend.py
===================================================================
--- trunk/src/tools/telemetry/telemetry/core/backends/webdriver/webdriver_tab_list_backend.py	(revision 215795)
+++ trunk/src/tools/telemetry/telemetry/core/backends/webdriver/webdriver_tab_list_backend.py	(working copy)
@@ -1,47 +0,0 @@
-# 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.backends.webdriver import webdriver_tab_backend
-
-class WebDriverTabListBackend(object):
-  def __init__(self, browser_backend):
-    self._browser_backend = browser_backend
-    # Stores the window handles.
-    self._tab_list = []
-
-  def Init(self):
-    self._UpdateTabList()
-
-  def New(self, timeout=None):
-    # Webdriver API doesn't support tab controlling.
-    raise NotImplementedError()
-
-  def __iter__(self):
-    self._UpdateTabList()
-    return self._tab_list.__iter__()
-
-  def __len__(self):
-    self._UpdateTabList()
-    return len(self._tab_list)
-
-  def __getitem__(self, index):
-    self._UpdateTabList()
-    if len(self._tab_list) <= index:
-      raise IndexError('list index out of range')
-    return self._tab_list[index]
-
-  def _UpdateTabList(self):
-    window_handles = self._browser_backend.driver.window_handles
-    old_tab_list = self._tab_list
-    self._tab_list = []
-    for window_handle in window_handles:
-      tab = None
-      for old_tab in old_tab_list:
-        if old_tab.window_handle == window_handle:
-          tab = old_tab
-          break
-      else:
-        tab = webdriver_tab_backend.WebDriverTabBackend(
-            self._browser_backend, window_handle)
-      self._tab_list.append(tab)