[tools/perf] Reference legacy_page_test module instead of page_test

tools/perf/benchmarks/robohornet_pro.py

 # Copyright 2012 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.
 
 """Runs Microsoft's RoboHornet Pro benchmark."""
 
 import os
 
 from core import perf_benchmark
 
 from telemetry import benchmark
 from telemetry import page as page_module
-from telemetry.page import page_test
+from telemetry.page import legacy_page_test
 from telemetry import story
 from telemetry.value import scalar
 
 from metrics import power
 
 
-class _RobohornetProMeasurement(page_test.PageTest):
+class _RobohornetProMeasurement(legacy_page_test.LegacyPageTest):
 
   def __init__(self):
     super(_RobohornetProMeasurement, self).__init__()
     self._power_metric = None
 
   def CustomizeBrowserOptions(self, options):
     power.PowerMetric.CustomizeBrowserOptions(options)
 
   def WillStartBrowser(self, platform):
     self._power_metric = power.PowerMetric(platform)
@@ skipping 34 matching lines @@
     ps = story.StorySet(
         archive_data_file='../page_sets/data/robohornet_pro.json',
         base_dir=os.path.dirname(os.path.abspath(__file__)),
         cloud_storage_bucket=story.PARTNER_BUCKET)
     ps.AddStory(page_module.Page(
         'http://ie.microsoft.com/testdrive/performance/robohornetpro/',
         ps, ps.base_dir,
         # Measurement require use of real Date.now() for measurement.
         make_javascript_deterministic=False))
     return ps