Fix import order with isort tool.

tools/telemetry/telemetry/core/browser_finder.py

 # Copyright 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.
 
 """Finds browsers that can be controlled by telemetry."""
 
 import logging
 import operator
 
 from telemetry import decorators
 from telemetry.core.backends.chrome import android_browser_finder
 from telemetry.core.backends.chrome import cros_browser_finder
 from telemetry.core.backends.chrome import desktop_browser_finder
 from telemetry.core.backends.chrome import ios_browser_finder
 from telemetry.core.backends.webdriver import webdriver_desktop_browser_finder
 
-
 BROWSER_FINDERS = [
   desktop_browser_finder,
   android_browser_finder,
   cros_browser_finder,
   ios_browser_finder,
   webdriver_desktop_browser_finder,
   ]
 
 ALL_BROWSER_TYPES = reduce(operator.add,
                            [bf.ALL_BROWSER_TYPES for bf in BROWSER_FINDERS])
@@ skipping 114 matching lines @@
     BrowserFinderException: Options are improperly set, or an error occurred.
   """
   browsers = []
   for finder in BROWSER_FINDERS:
     browsers.extend(finder.FindAllAvailableBrowsers(options))
 
   type_list = set([browser.browser_type for browser in browsers])
   type_list = list(type_list)
   type_list.sort()
   return type_list