[Android Buildbot] Add option to run only host driven Python tests.

build/android/buildbot/bb_device_steps.py

 #!/usr/bin/env python
 # Copyright (c) 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.
 
 import collections
 import glob
 import multiprocessing
 import os
 import shutil
@@ skipping 138 matching lines @@
   """
   if print_step:
     bb_annotations.PrintNamedStep('install_%s' % test.name.lower())
   args = ['--apk', test.apk, '--apk_package', test.apk_package]
   if options.target == 'Release':
     args.append('--release')
 
   RunCmd(['build/android/adb_install_apk.py'] + args, halt_on_failure=True)
 
 
-def RunInstrumentationSuite(options, test, flunk_on_failure=True):
+def RunInstrumentationSuite(options, test, flunk_on_failure=True,
+                            python_only=False):
   """Manages an invocation of test_runner.py for instrumentation tests.
 
   Args:
     options: options object
     test: An I_TEST namedtuple
+    flunk_on_failure: Flunk the step if tests fail.
+    Python: Run only host driven Python tests.
   """
   bb_annotations.PrintNamedStep('%s_instrumentation_tests' % test.name.lower())
 
   InstallApk(options, test)
   args = ['--test-apk', test.test_apk, '--test_data', test.test_data,
           '--verbose', '-I']
   if options.target == 'Release':
     args.append('--release')
   if options.asan:
     args.append('--tool=asan')
   if options.upload_to_flakiness_server:
     args.append('--flakiness-dashboard-server=%s' %
                 constants.UPSTREAM_FLAKINESS_SERVER)
   if test.host_driven_root:
     args.append('--python_test_root=%s' % test.host_driven_root)
   if test.annotation:
     args.extend(['-A', test.annotation])
   if test.exclude_annotation:
     args.extend(['-E', test.exclude_annotation])
   if test.extra_flags:
     args.extend(test.extra_flags)
+  if python_only:
+    args.append('-p')
 
   RunCmd(['build/android/test_runner.py', 'instrumentation'] + args,
          flunk_on_failure=flunk_on_failure)
 
 
 def RunWebkitLint(target):
   """Lint WebKit's TestExpectation files."""
   bb_annotations.PrintNamedStep('webkit_lint')
   RunCmd(['webkit/tools/layout_tests/run_webkit_tests.py',
           '--lint-test-files',
@@ skipping 187 matching lines @@
     return sys.exit('Unknown tests %s' % list(unknown_tests))
 
   setattr(options, 'target', options.factory_properties.get('target', 'Debug'))
 
   MainTestWrapper(options)
   provision_devices.KillHostHeartbeat()
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))