Added support to listen on Network.responseReceived and expose that through tab.py

tools/telemetry/telemetry/core/backends/chrome/inspector_timeline.py

Index: tools/telemetry/telemetry/core/backends/chrome/inspector_timeline.py
diff --git a/tools/telemetry/telemetry/core/backends/chrome/inspector_timeline.py b/tools/telemetry/telemetry/core/backends/chrome/inspector_timeline.py
index 9492782139404bf820184371b4541b0368e587cb..0c469a7dd896466f0e8d46f81d4c0ffda9ea323f 100644
--- a/tools/telemetry/telemetry/core/backends/chrome/inspector_timeline.py
+++ b/tools/telemetry/telemetry/core/backends/chrome/inspector_timeline.py
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-from telemetry.core.timeline import model
+from telemetry.core.backends.chrome import timeline_recorder
 
 
 class TabBackendException(Exception):
@@ -10,7 +10,7 @@ class TabBackendException(Exception):
   pass
 
 
-class InspectorTimeline(object):
+class InspectorTimeline(timeline_recorder.TimelineRecorder):
   """Implementation of dev tools timeline."""
 
   class Recorder(object):
@@ -33,13 +33,9 @@ class InspectorTimeline(object):
       self._tab.StopTimelineRecording()
 
   def __init__(self, inspector_backend):
+    super(InspectorTimeline, self).__init__()
     self._inspector_backend = inspector_backend
     self._is_recording = False
-    self._timeline_model = None
-
-  @property
-  def timeline_model(self):
-    return self._timeline_model
 
   def Start(self):
     """Starts recording."""
@@ -56,14 +52,14 @@ class InspectorTimeline(object):
     }
     self._SendSyncRequest(request)
 
-  def Stop(self):
-    """Stops recording and makes a TimelineModel with the event data."""
+  def Stop(self, timeline_model):
+    """Stops recording and import the event data to the timeline model."""
     assert self._is_recording, 'Stop should be called after Start.'
     request = {'method': 'Timeline.stop'}
     result = self._SendSyncRequest(request)
     raw_events = result['events']
-    self._timeline_model = model.TimelineModel(
-        event_data=raw_events, shift_world_to_zero=False)
+    timeline_model.ImportTraces(
+        [raw_events], shift_world_to_zero=False, freeze=False)
     self._inspector_backend.UnregisterDomain('Timeline')
     self._is_recording = False