Fix uploader

tools/run_tests/run_microbenchmark.py

@@ -152,7 +152,7 @@ def collect_summary(bm_name, args):
                                 '--benchmark_out_format=json']))
   if args.bigquery_upload:
     with open('/tmp/out.csv', 'w') as f:
-      f.write(subprocess.check_output(['tools/profiling/microbenchmarks/bm2bq.py out.json']))
+      f.write(subprocess.check_output(['tools/profiling/microbenchmarks/bm2bq.py', 'out.json']))
     subprocess.check_call(['bq', 'load', 'microbenchmarks.microbenchmarks', 'out.csv'])
 
 collectors = {