Replace loading_resources with is_respsonsive. Add repr for timeline_interaction_record

tools/telemetry/telemetry/web_perf/timeline_based_measurement_unittest.py

Index: tools/telemetry/telemetry/web_perf/timeline_based_measurement_unittest.py
diff --git a/tools/telemetry/telemetry/web_perf/timeline_based_measurement_unittest.py b/tools/telemetry/telemetry/web_perf/timeline_based_measurement_unittest.py
index c4eeae9e8f73a5a4ec7b961becb4f119638ac8cd..5051f47485c7aa762cec9d13b4a3d14c5b0ed56e 100644
--- a/tools/telemetry/telemetry/web_perf/timeline_based_measurement_unittest.py
+++ b/tools/telemetry/telemetry/web_perf/timeline_based_measurement_unittest.py
@@ -33,7 +33,7 @@ class TimelineBasedMetricsTests(unittest.TestCase):
         start_thread=renderer_thread, end_thread=renderer_thread,
         thread_start=5, thread_duration=15))
     renderer_thread.async_slices.append(async_slice.AsyncSlice(
-        'cat', 'Interaction.LogicalName2/is_loading_resources',
+        'cat', 'Interaction.LogicalName2/is_responsive',
         timestamp=25, duration=5,
         start_thread=renderer_thread, end_thread=renderer_thread,
         thread_start=25, thread_duration=5))
@@ -51,7 +51,7 @@ class TimelineBasedMetricsTests(unittest.TestCase):
     self.assertEquals(0, interactions[0].start)
     self.assertEquals(20, interactions[0].end)
 
-    self.assertTrue(interactions[1].is_loading_resources)
+    self.assertTrue(interactions[1].is_responsive)
     self.assertEquals(25, interactions[1].start)
     self.assertEquals(30, interactions[1].end)
 
@@ -73,7 +73,7 @@ class TimelineBasedMetricsTests(unittest.TestCase):
       res = []
       if interaction.is_smooth:
         res.append(FakeSmoothMetric())
-      if interaction.is_loading_resources:
+      if interaction.is_responsive:
         res.append(FakeLoadingMetric())
       return res