Add responsiveness_metric for timeline_based_measurement

tools/telemetry/telemetry/web_perf/timeline_interaction_record_unittest.py

Index: tools/telemetry/telemetry/web_perf/timeline_interaction_record_unittest.py
diff --git a/tools/telemetry/telemetry/web_perf/timeline_interaction_record_unittest.py b/tools/telemetry/telemetry/web_perf/timeline_interaction_record_unittest.py
index 3623217d30e4a6f1877a5f9e8e8f7f421ae73056..fc4adac595ae432a4cde90a28e97ad72cf698bf5 100644
--- a/tools/telemetry/telemetry/web_perf/timeline_interaction_record_unittest.py
+++ b/tools/telemetry/telemetry/web_perf/timeline_interaction_record_unittest.py
@@ -27,30 +27,30 @@ class ParseTests(unittest.TestCase):
     r = self.CreateRecord('Interaction.LogicalName')
     self.assertEquals('LogicalName', r.logical_name)
     self.assertEquals(False, r.is_smooth)
-    self.assertEquals(False, r.is_loading_resources)
+    self.assertEquals(False, r.is_responsive)
 
     r = self.CreateRecord('Interaction.LogicalName/is_smooth')
     self.assertEquals('LogicalName', r.logical_name)
     self.assertEquals(True, r.is_smooth)
-    self.assertEquals(False, r.is_loading_resources)
+    self.assertEquals(False, r.is_responsive)
 
     r = self.CreateRecord('Interaction.LogicalNameWith/Slash/is_smooth')
     self.assertEquals('LogicalNameWith/Slash', r.logical_name)
     self.assertEquals(True, r.is_smooth)
-    self.assertEquals(False, r.is_loading_resources)
+    self.assertEquals(False, r.is_responsive)
 
     r = self.CreateRecord(
-        'Interaction.LogicalNameWith/Slash/is_smooth,is_loading_resources')
+        'Interaction.LogicalNameWith/Slash/is_smooth,is_responsive')
     self.assertEquals('LogicalNameWith/Slash', r.logical_name)
     self.assertEquals(True, r.is_smooth)
-    self.assertEquals(True, r.is_loading_resources)
+    self.assertEquals(True, r.is_responsive)
 
   def testGetJavascriptMarker(self):
     smooth_marker = tir_module.TimelineInteractionRecord.GetJavascriptMarker(
       'LogicalName', [tir_module.IS_SMOOTH])
     self.assertEquals('Interaction.LogicalName/is_smooth', smooth_marker)
     slr_marker = tir_module.TimelineInteractionRecord.GetJavascriptMarker(
-      'LogicalName', [tir_module.IS_SMOOTH, tir_module.IS_LOADING_RESOURCES])
-    self.assertEquals('Interaction.LogicalName/is_smooth,is_loading_resources',
+      'LogicalName', [tir_module.IS_SMOOTH, tir_module.IS_RESPONSIVE])
+    self.assertEquals('Interaction.LogicalName/is_smooth,is_responsive',
                       slr_marker)