[android] Instumentation tests determine whether to install test apk based on Md5Sum.

build/android/test_runner.py

 #!/usr/bin/env python
 #
 # 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.
 
 """Runs all types of tests from one unified interface.
 
 TODO(gkanwar):
 * Add options to run Monkey tests.
@@ skipping 248 matching lines @@
   if not options.keep_test_server_ports:
     if not ports.ResetTestServerPortAllocation():
       raise Exception('Failed to reset test server port.')
 
 
 def AddInstrumentationTestOptions(option_parser):
   """Adds Instrumentation test options to |option_parser|."""
 
   option_parser.usage = '%prog instrumentation [options]'
   option_parser.command_list = []
-  option_parser.example = ('%prog instrumentation -I '
+  option_parser.example = ('%prog instrumentation '
                            '--test-apk=ChromiumTestShellTest')
 
   AddJavaTestOptions(option_parser)
   AddCommonOptions(option_parser)
 
   option_parser.add_option('-w', '--wait_debugger', dest='wait_for_debugger',
                            action='store_true',
                            help='Wait for debugger.')
+  #TODO(craigdh): Remove option once -I is no longer passed downstream.
   option_parser.add_option('-I', dest='install_apk', action='store_true',
-                           help='Install test APK.')
+                           help='This switch has no effect.')

[frankf, 2013/07/19 21:53:54]

Follow the DEPRECATED used elsewhere in this file.

[craigdh, 2013/07/19 23:38:38]

Done.

   option_parser.add_option(
       '--test-apk', dest='test_apk',
       help=('The name of the apk containing the tests '
             '(without the .apk extension; e.g. "ContentShellTest"). '
             'Alternatively, this can be a full path to the apk.'))
 
 
 def ProcessInstrumentationOptions(options, error_func):
   """Processes options/arguments and populate |options| with defaults."""
 
@@ skipping 236 matching lines @@
     return 0
   command = argv[1]
   VALID_COMMANDS[command].add_options_func(option_parser)
   options, args = option_parser.parse_args(argv)
   return VALID_COMMANDS[command].run_command_func(
       command, options, args, option_parser)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))