[Telemetry] Add 'name' attribute for pages, which allows for more human-readable printing

tools/perf/measurements/loading_profile.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 os
 import tempfile
 
 from metrics import loading
 from telemetry.core import util
 from telemetry.core.platform.profiler import perf_profiler
@@ skipping 16 matching lines @@
     page_repeat_option.default = 2
     parser.remove_option('--page-repeat')
     parser.add_option(page_repeat_option)
 
   def CustomizeBrowserOptions(self, options):
     perf_profiler.PerfProfiler.CustomizeBrowserOptions(options)
 
   def WillNavigateToPage(self, page, tab):
     tab.browser.StartProfiling(perf_profiler.PerfProfiler.name(),
                                os.path.join(tempfile.mkdtemp(),
-                                            page.url_as_file_safe_name))
+                                            page.file_safe_name))
 
   def MeasurePage(self, page, tab, results):
     # In current telemetry tests, all tests wait for DocumentComplete state,
     # but we need to wait for the load event.
     def IsLoaded():
       return bool(tab.EvaluateJavaScript('performance.timing.loadEventStart'))
     util.WaitFor(IsLoaded, 300)
 
     profile_files = tab.browser.StopProfiling()
 
     loading.LoadingMetric().AddResults(tab, results)
 
     profile_file = None
     for profile_file in profile_files:
       if 'renderer' in profile_file:
         break
 
     for function, period in perf_profiler.PerfProfiler.GetTopSamples(
         profile_file, 10).iteritems():
       results.Add(function.replace('.', '_'), 'period', period)