[Telemetry] Update arguments printed by ./run_benchmark --list.

tools/telemetry/telemetry/test_runner.py

Index: tools/telemetry/telemetry/test_runner.py
diff --git a/tools/telemetry/telemetry/test_runner.py b/tools/telemetry/telemetry/test_runner.py
index 7fbbd8f90c1ac0bb4651e495228cb1bb10d7adfd..0b17d85f3d4d2e488d1b8342d327a94e010a3751 100644
--- a/tools/telemetry/telemetry/test_runner.py
+++ b/tools/telemetry/telemetry/test_runner.py
@@ -283,7 +283,8 @@ def _GetJsonTestList(possible_browser, test_classes, num_shards):
     output['steps'][name] = {
       'cmd': ' '.join([sys.executable, os.path.realpath(sys.argv[0]),
                        '--browser=%s' % possible_browser.browser_type,
-                       '-v', '--output-format=buildbot', name]),
+                       '-v', '--output-format=chartjson', '--upload-results',
+                       name]),
       # TODO(tonyg): Currently we set the device affinity to a stable hash of
       # the test name. This somewhat evenly distributes benchmarks among the
       # requested number of shards. However, it is far from optimal in terms of