[tools/perf] Reference legacy_page_test module instead of page_test

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.page import page_test
+from telemetry.page import legacy_page_test
 from telemetry.timeline.model import TimelineModel
 from telemetry.timeline import tracing_config
 from telemetry.value import list_of_scalar_values
 from telemetry.value import scalar
 
 
 _CR_RENDERER_MAIN = 'CrRendererMain'
 _RUN_SMOOTH_ACTIONS = 'RunSmoothAllActions'
 
 
@@ skipping 104 matching lines @@
     total_sweep_time += sweep_time
   results.AddValue(
       scalar.ScalarValue(page, 'oilpan_sweep', unit, total_sweep_time))
 
   gc_time = 0
   for key in values:
     gc_time += sum(values[key])
   results.AddValue(scalar.ScalarValue(page, 'oilpan_gc', unit, gc_time))
 
 
-class _OilpanGCTimesBase(page_test.PageTest):
+class _OilpanGCTimesBase(legacy_page_test.LegacyPageTest):
 
   def __init__(self, action_name=''):
     super(_OilpanGCTimesBase, self).__init__(action_name)
 
   def WillNavigateToPage(self, page, tab):
     # FIXME: Remove webkit.console when blink.console lands in chromium and
     # the ref builds are updated. crbug.com/386847
     config = tracing_config.TracingConfig()
     for c in ['webkit.console', 'blink.console', 'blink_gc']:
       config.tracing_category_filter.AddIncludedCategory(c)
@@ skipping 51 matching lines @@
 
   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'])