Move recipe engine to third_party/recipe_engine.

scripts/slave/unittests/expect_tests/handle_list.py

-# Copyright 2014 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 .type_definitions import Handler
-
-
-class ListHandler(Handler):
-  """List all of the tests instead of running them."""
-  SKIP_RUNLOOP = True
-
-  # Used to collect all bare test names for command line test name completion.
-  COMPLETION_LIST = None
-
-  class ResultStageHandler(Handler.ResultStageHandler):
-    @staticmethod
-    def handle_Test(test):
-      if ListHandler.COMPLETION_LIST is not None:
-        ListHandler.COMPLETION_LIST.append(test.name)
-      else:
-        print test.name
-
-    @staticmethod
-    def handle_MultiTest(multi_test):
-      print 'MultiTest(%r, atomic=%r)' % (multi_test.name, multi_test.atomic)
-      for test in multi_test.tests:
-        if ListHandler.COMPLETION_LIST is not None:
-          ListHandler.COMPLETION_LIST.append(test.name)
-        else:
-          print '|', test.name
-
-    # TODO(iannucci): group tests by dir?
-    # TODO(iannucci): print more data about the test in verbose mode?