[android] Make build_type a singleton.

build/android/pylib/base/test_dispatcher.py

 # 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.
 
 """Dispatches tests, either sharding or replicating them.
 
 To dispatch, performs the following steps:
 * Create a test collection factory, using the given tests
   - If sharding: test collection factory returns the same shared test collection
     to all test runners
@@ skipping 317 matching lines @@
 
   if len(attached_devices) > 1 and wait_for_debugger:
     logging.warning('Debugger can not be sharded, using first available device')
     attached_devices = attached_devices[:1]
 
   return attached_devices
 
 
 def RunTests(tests, runner_factory, wait_for_debugger, test_device,
              shard=True,
-             build_type='Debug',
              test_timeout=DEFAULT_TIMEOUT,
              setup_timeout=DEFAULT_TIMEOUT,
              num_retries=2):
   """Run all tests on attached devices, retrying tests that don't pass.
 
   Args:
     tests: List of tests to run.
     runner_factory: Callable that takes a device and index and returns a
         TestRunner object.
     wait_for_debugger: True if this test is using a debugger.
     test_device: A specific device to run tests on, or None.
     shard: True if we should shard, False if we should replicate tests.
       - Sharding tests will distribute tests across all test runners through a
         shared test collection.
       - Replicating tests will copy all tests to each test runner through a
         unique test collection for each test runner.
-    build_type: Either 'Debug' or 'Release'.
     test_timeout: Watchdog timeout in seconds for running tests.
     setup_timeout: Watchdog timeout in seconds for creating and cleaning up
         test runners.
     num_retries: Number of retries for a test.
 
   Returns:
     A tuple of (base_test_result.TestRunResults object, exit code).
   """
   if not tests:
     logging.error('No tests to run.')
@@ skipping 18 matching lines @@
   logging.info('Will run %d tests (%s): %s', len(tests), log_string, str(tests))
   runners = _CreateRunners(runner_factory, devices, setup_timeout)
   try:
     return _RunAllTests(runners, test_collection_factory,
                         num_retries, test_timeout, tag_results_with_device)
   finally:
     try:
       _TearDownRunners(runners, setup_timeout)
     except android_commands.errors.DeviceUnresponsiveError as e:
       logging.warning('Device unresponsive during TearDown: [%s]', e)