[tools/perf] Reference legacy_page_test module instead of page_test

tools/perf/measurements/power.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 time
 
 from metrics import network
 from metrics import power
 from telemetry.core import util
-from telemetry.page import page_test
+from telemetry.page import legacy_page_test
 
 
-class Power(page_test.PageTest):
+class Power(legacy_page_test.LegacyPageTest):
   """Measures power draw and idle wakeups during the page's interactions."""
 
   def __init__(self):
     super(Power, self).__init__()
     self._power_metric = None
     self._network_metric = None
 
   def WillStartBrowser(self, platform):
     self._power_metric = power.PowerMetric(platform)
     self._network_metric = network.NetworkMetric(platform)
@@ skipping 17 matching lines @@
 class LoadPower(Power):
 
   def WillNavigateToPage(self, page, tab):
     self._network_metric.Start(page, tab)
     self._power_metric.Start(page, tab)
 
   def DidNavigateToPage(self, page, tab):
     pass
 
 
-class QuiescentPower(page_test.PageTest):
+class QuiescentPower(legacy_page_test.LegacyPageTest):
   """Measures power draw and idle wakeups after the page finished loading."""
 
   # Amount of time to measure, in seconds.
   SAMPLE_TIME = 30
 
   def ValidateAndMeasurePage(self, page, tab, results):
     if not tab.browser.platform.CanMonitorPower():
       return
 
     util.WaitFor(tab.HasReachedQuiescence, 60)
 
     metric = power.PowerMetric(tab.browser.platform)
     metric.Start(page, tab)
 
     time.sleep(QuiescentPower.SAMPLE_TIME)
 
     metric.Stop(page, tab)
     metric.AddResults(tab, results)