Revert of Remove usages of Timeline commands in telemetry

tools/telemetry/telemetry/core/web_contents.py

Index: tools/telemetry/telemetry/core/web_contents.py
diff --git a/tools/telemetry/telemetry/core/web_contents.py b/tools/telemetry/telemetry/core/web_contents.py
index fe790ad18fcd6b8b13d8b6907df902bcdb4882da..05475c5c6d5e87013b02e53d90b3309531f8b5b2 100644
--- a/tools/telemetry/telemetry/core/web_contents.py
+++ b/tools/telemetry/telemetry/core/web_contents.py
@@ -167,8 +167,12 @@
   def timeline_model(self):
     return self._inspector_backend.timeline_model
 
-  def StartTimelineRecording(self):
-    self._inspector_backend.StartTimelineRecording()
+  def StartTimelineRecording(self, options=None):
+    self._inspector_backend.StartTimelineRecording(options)
+
+  @property
+  def is_timeline_recording_running(self):
+    return self._inspector_backend.is_timeline_recording_running
 
   def StopTimelineRecording(self):
     self._inspector_backend.StopTimelineRecording()