clovis: Report the number and cost of DNS requests.

tools/android/loading/report.py

Index: tools/android/loading/report.py
diff --git a/tools/android/loading/report.py b/tools/android/loading/report.py
index 21ca1e8ce85cdd4706ff6a4c47a55f0fc3c1bdc5..d8416eb107b883034979c76dffc7c1a7dca7a771 100644
--- a/tools/android/loading/report.py
+++ b/tools/android/loading/report.py
@@ -107,6 +107,7 @@ class LoadingReport(object):
            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)
@@ -144,7 +145,9 @@ class LoadingReport(object):
         '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():