Add test APK information to buildbot step for Android instrumentation tests.

build/android/run_instrumentation_tests.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2012 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 both the Python and Java tests."""
 
 import optparse
 import sys
@@ skipping 59 matching lines @@
 
 
 def main(argv):
   option_parser = optparse.OptionParser()
   test_options_parser.AddInstrumentationOptions(option_parser)
   options, args = option_parser.parse_args(argv)
   test_options_parser.ValidateInstrumentationOptions(option_parser, options,
                                                      args)
 
   run_tests_helper.SetLogLevel(options.verbose_count)
-  buildbot_report.PrintNamedStep('Instrumentation tests: %s'
-                                 % ', '.join(options.annotation))
+  buildbot_report.PrintNamedStep(
+      'Instrumentation tests: %s - %s' % (', '.join(options.annotation),
+                                          options.test_apk))
   return DispatchInstrumentationTests(options)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))