clovis: Report the number and cost of DNS requests.

tools/android/loading/report.py

 # Copyright 2016 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.
 
 """Generates a loading report.
 
 When executed as a script, takes a trace filename and print the report.
 """
 
 from activity_lens import ActivityLens
@@ skipping 89 matching lines @@
     self._load_end_msec = self._ComputePlt(trace)
 
     dependencies_lens = request_dependencies_lens.RequestDependencyLens(
         self.trace)
     requests = self.trace.request_track.GetEvents()
     preloaded_requests = \
        prefetch_view.PrefetchSimulationView.PreloadedRequests(
            requests[0], dependencies_lens, self.trace)
     self._requests = len(requests)
     self._preloaded_requests = len(preloaded_requests)
+    self._dns_requests, self._dns_cost_msec = metrics.DnsRequestsAndCost(trace)
 
     self._user_lens_reports = {}
     first_text_paint_lens = FirstTextPaintLens(self.trace)
     first_contentful_paint_lens = FirstContentfulPaintLens(self.trace)
     first_significant_paint_lens = FirstSignificantPaintLens(self.trace)
     activity = ActivityLens(trace)
     network_lens = NetworkActivityLens(self.trace)
     for key, user_lens in [['first_text', first_text_paint_lens],
                            ['contentful', first_contentful_paint_lens],
                            ['significant', first_significant_paint_lens]]:
@@ skipping 17 matching lines @@
         self._navigation_start_msec, self._load_end_msec, content_lens,
         activity, has_tracking_rules or has_ad_rules)
 
   def GenerateReport(self):
     """Returns a report as a dict."""
     report = {
         'url': self.trace.url,
         'plt_ms': self._load_end_msec - self._navigation_start_msec,
         'requests': self._requests,
         'preloaded_requests': self._preloaded_requests,
-        'transfer_size': self._transfer_size}
+        'transfer_size': self._transfer_size,
+        'dns_requests': self._dns_requests,
+        'dns_cost_ms': self._dns_cost_msec}
 
     for user_lens_type, user_lens_report in self._user_lens_reports.iteritems():
       for key, value in user_lens_report.GenerateReport().iteritems():
         report[user_lens_type + '_' + key] = value
 
     report.update(self._cpu_busyness)
     report.update(self._ad_report)
     report.update(self._ads_cost)
     return report
 
@@ skipping 93 matching lines @@
   report = LoadingReport.FromTraceFilename(
       trace_filename, ad_rules, tracking_rules)
   print json.dumps(report.GenerateReport(), indent=2, sort_keys=True)
 
 
 if __name__ == '__main__':
   import sys
   import json
 
   _Main(sys.argv)