Add responsiveness_metric for timeline_based_measurement

tools/telemetry/telemetry/web_perf/timeline_based_measurement.py

Index: tools/telemetry/telemetry/web_perf/timeline_based_measurement.py
diff --git a/tools/telemetry/telemetry/web_perf/timeline_based_measurement.py b/tools/telemetry/telemetry/web_perf/timeline_based_measurement.py
index a9cb2dfdab7bba12ef165392cb1279fb9b0d8828..467e194882ed68276ae9ecd37fb5a2269fef77ca 100644
--- a/tools/telemetry/telemetry/web_perf/timeline_based_measurement.py
+++ b/tools/telemetry/telemetry/web_perf/timeline_based_measurement.py
@@ -5,6 +5,7 @@
 from telemetry.core.backends.chrome import tracing_backend
 from telemetry.web_perf import timeline_interaction_record as tir_module
 from telemetry.web_perf.metrics import smoothness
+from telemetry.web_perf.metrics import mainthread_jank
 from telemetry.page import page_measurement
 from telemetry.core.timeline import model as model_module
 
@@ -122,6 +123,8 @@ class TimelineBasedMeasurement(page_measurement.PageMeasurement):
     res = []
     if interaction.is_smooth:
       res.append(smoothness.SmoothnessMetric())
+    if interaction.is_responsive:
+      res.append(mainthread_jank.MainthreadJankMetric())
     return res
 
   def MeasurePage(self, page, tab, results):