[Telemetry] Migrate browser_test_runner to use typ as the test runner

telemetry/examples/browser_tests/failed_tests.py

 # Copyright 2016 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 sys
 
 from telemetry.testing import serially_executed_browser_test_case
 
 
 class SetUpClassFailedTest(
     serially_executed_browser_test_case.SeriallyExecutedBrowserTestCase):
 
   @classmethod
   def setUpClass(cls):
     raise Exception
 
   @classmethod
   def GenerateTestCases_DummyTest(cls, options):
     del options  # Unused.
-    for i in xrange(0, 100):
+    for i in xrange(0, 3):
       yield 'dummy_test_%i' % i, ()
 
   def DummyTest(self):
     pass
 
 
 class TearDownClassFailedTest(
     serially_executed_browser_test_case.SeriallyExecutedBrowserTestCase):
 
   @classmethod
   def tearDownClass(cls):
     raise Exception
 
   @classmethod
   def GenerateTestCases_DummyTest(cls, options):
     del options  # Unused.
-    for i in xrange(0, 100):
+    for i in xrange(0, 3):
       yield 'dummy_test_%i' % i, ()
 
   def DummyTest(self):
     pass
 
 
 def load_tests(loader, tests, pattern):
   del loader, tests, pattern  # Unused.
   return serially_executed_browser_test_case.LoadAllTestsInModule(
       sys.modules[__name__])