[tools/perf] Update users of action_runner to directly referencing it from tab.action_runner field

tools/perf/measurements/timeline_controller.py

Index: tools/perf/measurements/timeline_controller.py
diff --git a/tools/perf/measurements/timeline_controller.py b/tools/perf/measurements/timeline_controller.py
index a413d8324869b26bb755d741f9f0fd23e1545469..93f29e3707d38a4e7d19643f3992d9aa40e542aa 100644
--- a/tools/perf/measurements/timeline_controller.py
+++ b/tools/perf/measurements/timeline_controller.py
@@ -2,7 +2,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-from telemetry.page import action_runner
 from telemetry.page import page_test
 from telemetry.timeline.model import TimelineModel
 from telemetry.timeline import tracing_config
@@ -43,9 +42,8 @@ class TimelineController(object):
 
   def Start(self, tab):
     # Start the smooth marker for all actions.
-    runner = action_runner.ActionRunner(tab)
     if self._enable_auto_issuing_record:
-      self._interaction = runner.CreateInteraction(
+      self._interaction = tab.action_runner.CreateInteraction(
           RUN_SMOOTH_ACTIONS)
       self._interaction.Begin()