Move telemetry/core/timeline and timeline_data to telemetry/timeline.

tools/perf/measurements/timeline_controller.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from measurements import smooth_gesture_util
 
 from telemetry.core.backends.chrome import tracing_backend
-from telemetry.core.timeline.model import TimelineModel
+from telemetry.timeline.model import TimelineModel
 from telemetry.page.actions import action_runner
 from telemetry.web_perf import timeline_interaction_record as tir_module
 
 
 RUN_SMOOTH_ACTIONS = 'RunSmoothAllActions'
 
 
 class TimelineController(object):
   def __init__(self):
     super(TimelineController, self).__init__()
@@ skipping 64 matching lines @@
   def model(self):
     return self._model
 
   @property
   def renderer_process(self):
     return self._renderer_process
 
   @property
   def smooth_records(self):
     return self._smooth_records