[Startup Tracing][Telemetry] Move tracing_options and tracing_category_filter

tools/perf/measurements/oilpan_gc_times.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.
 
 import os
 
-from telemetry.core.platform import tracing_category_filter
-from telemetry.core.platform import tracing_options
 from telemetry.page import action_runner
 from telemetry.page import page_test
 from telemetry.timeline.model import TimelineModel
+from telemetry.timeline import tracing_category_filter
+from telemetry.timeline import tracing_options
 from telemetry.value import list_of_scalar_values
 from telemetry.value import scalar
 
 
 _CR_RENDERER_MAIN = 'CrRendererMain'
 _RUN_SMOOTH_ACTIONS = 'RunSmoothAllActions'
 
 
 def _AddTracingResults(thread, results):
   _GC_REASONS = ['precise', 'conservative', 'idle', 'forced']
@@ skipping 174 matching lines @@
 class OilpanGCTimesForInternals(OilpanGCTimesForBlinkPerf):
   def __init__(self):
     super(OilpanGCTimesForInternals, self).__init__()
 
   @classmethod
   def CustomizeBrowserOptions(cls, options):
     # 'expose-internals-for-testing' can be enabled on content shell.
     assert 'content-shell' in options.browser_type
     options.AppendExtraBrowserArgs(['--expose-internals-for-testing',
                                     '--js-flags=--expose-gc'])