[Startup Tracing][Telemetry] Move tracing_options and tracing_category_filter

tools/telemetry/telemetry/internal/backends/chrome_inspector/tracing_backend_unittest.py

 # Copyright 2013 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 unittest
 
-from telemetry.core.platform import tracing_category_filter
-from telemetry.core.platform import tracing_options
 from telemetry.core import util
 from telemetry.internal.backends.chrome_inspector import tracing_backend
 from telemetry.internal.backends.chrome_inspector import websocket
 from telemetry.testing import simple_mock
 from telemetry.testing import tab_test_case
 from telemetry.timeline import model as model_module
+from telemetry.timeline import tracing_category_filter
+from telemetry.timeline import tracing_options
 
 util.AddDirToPythonPath(util.GetTelemetryDir(), 'third_party', 'mock')
 import mock  # pylint:disable=import-error
 
 
 class FakeInspectorWebsocket(object):
   """A fake InspectorWebsocket.
 
   A fake that allows tests to send pregenerated data. Normal
   InspectorWebsockets allow for any number of domain handlers. This fake only
@@ skipping 105 matching lines @@
     inspector.AddResponse('Tracing.tracingComplete', 'asdf3', 19)
 
     with mock.patch('telemetry.internal.backends.chrome_inspector.'
                     'inspector_websocket.InspectorWebsocket') as mock_class:
       mock_class.return_value = inspector
       backend = tracing_backend.TracingBackend(devtools_port=65000)
 
     backend._CollectTracingData(10)
     self.assertEqual(2, len(backend._trace_events))
     self.assertTrue(backend._has_received_all_tracing_data)