Add responsiveness_metric for timeline_based_measurement

tools/telemetry/telemetry/web_perf/timeline_interaction_record.py

Index: tools/telemetry/telemetry/web_perf/timeline_interaction_record.py
diff --git a/tools/telemetry/telemetry/web_perf/timeline_interaction_record.py b/tools/telemetry/telemetry/web_perf/timeline_interaction_record.py
index dbf605b1103fd77d642dee9f103e12880d1bbc73..0a39021a68f434c7ba8fdec490dfbb2ab866cde9 100644
--- a/tools/telemetry/telemetry/web_perf/timeline_interaction_record.py
+++ b/tools/telemetry/telemetry/web_perf/timeline_interaction_record.py
@@ -9,11 +9,11 @@ import telemetry.core.timeline.bounds as timeline_bounds
 
 
 IS_SMOOTH = "is_smooth"
-IS_LOADING_RESOURCES = "is_loading_resources"
+IS_RESPONSIVE = "is_responsive"
 
 FLAGS = [
   IS_SMOOTH,
-  IS_LOADING_RESOURCES
+  IS_RESPONSIVE
 ]
 
 def IsTimelineInteractionRecord(event_name):
@@ -45,7 +45,7 @@ class TimelineInteractionRecord(object):
   is currently done by pushing markers into the console.time/timeEnd API: this
   for instance can be issued in JS:
 
-     var str = 'Interaction.SendEmail/is_smooth,is_loading_resources';
+     var str = 'Interaction.SendEmail/is_smooth,is_responsive';
      console.time(str);
      setTimeout(function() {
        console.timeEnd(str);
@@ -56,14 +56,19 @@ class TimelineInteractionRecord(object):
   smoothness and network metrics to be reported for the marked up 1000ms
   time-range.
 
+  start and end are timestamps in seconds.
+
   """
-  def __init__(self, logical_name, start, end):
+  def __init__(self, logical_name, start, end, thread_start=None,
+               thread_end=None):
     assert logical_name
     self.logical_name = logical_name
     self.start = start
     self.end = end
+    self.thread_start = thread_start
+    self.thread_end = thread_end
     self.is_smooth = False
-    self.is_loading_resources = False
+    self.is_responsive = False
 
   @staticmethod
   def FromEvent(event):
@@ -80,13 +85,14 @@ class TimelineInteractionRecord(object):
       logical_name = m.group(1)
       flags = []
 
-    record = TimelineInteractionRecord(logical_name, event.start, event.end)
+    record = TimelineInteractionRecord(logical_name, event.start, event.end,
+                                       event.thread_start, event.thread_end)
     for f in flags:
       if not f in FLAGS:
         raise Exception(
           'Unrecognized flag in timeline Interaction record: %s' % f)
     record.is_smooth = IS_SMOOTH in flags
-    record.is_loading_resources = IS_LOADING_RESOURCES in flags
+    record.is_responsive = IS_RESPONSIVE in flags
     return record
 
   def GetResultNameFor(self, result_name):