Fix logdog_wrapper to not upload if logdog binary does not exist.

build/android/test_wrapper/logdog_wrapper.py

Index: build/android/test_wrapper/logdog_wrapper.py
diff --git a/build/android/test_wrapper/logdog_wrapper.py b/build/android/test_wrapper/logdog_wrapper.py
index 5213cb367d38708842f8f719dc43cb09b3af13d7..f181d50e602455d0e567a3162a12feec64de8575 100755
--- a/build/android/test_wrapper/logdog_wrapper.py
+++ b/build/android/test_wrapper/logdog_wrapper.py
@@ -57,9 +57,8 @@ def main():
         '--logcat-output-file',
         (args.logcat_output_file if args.logcat_output_file
             else os.path.join(logcat_output_dir, 'logcats')),
-        '--upload-logcats-file',
         '--target-devices-file', args.target_devices_file,
-        '-v'] + extra_cmd_args
+        '-v']
 
     with tempfile_ext.NamedTemporaryDirectory(
         prefix='tmp_android_logdog_wrapper') as temp_directory:
@@ -67,7 +66,9 @@ def main():
         logging.error(
             'Logdog binary %s unavailable. Unable to create logdog client',
             args.logdog_bin_cmd)
+        test_cmd += extra_cmd_args

[jbudorick, 2017/04/24 22:02:51]

Can we move this below the if/else block and just do it once?

       else:
+        test_cmd += ['--upload-logcats-file'] + extra_cmd_args
         streamserver_uri = 'unix:%s' % os.path.join(temp_directory,
                                                     'butler.sock')
         prefix = os.path.join('android', 'swarming', 'logcats',