[Telemetry] Report network metrics for the page cycler.

tools/perf/measurements/page_cycler.py

Index: tools/perf/measurements/page_cycler.py
diff --git a/tools/perf/measurements/page_cycler.py b/tools/perf/measurements/page_cycler.py
index 5ea989796bd2b004bf75a62ca6007f4d016e5bf4..22dbdb47512202fb0830dc80a60177b91cf9ec21 100644
--- a/tools/perf/measurements/page_cycler.py
+++ b/tools/perf/measurements/page_cycler.py
@@ -20,6 +20,7 @@ import sys
 
 from metrics import histogram
 from metrics import memory
+from metrics import network
 from telemetry.core import util
 from telemetry.page import page_measurement
 
@@ -40,6 +41,7 @@ class PageCycler(page_measurement.PageMeasurement):
 
     self._memory_metric = None
     self._histograms = None
+    self._network_metric = network.NetworkMetric()
 
   def AddCommandLineOptions(self, parser):
     # The page cyclers should default to 10 iterations. In order to change the
@@ -65,6 +67,7 @@ class PageCycler(page_measurement.PageMeasurement):
 
   def WillNavigateToPage(self, page, tab):
     page.script_to_evaluate_on_commit = self._page_cycler_js
+    self._network_metric.Start(page, tab)
 
   def DidNavigateToPage(self, page, tab):
     for h in self._histograms:
@@ -78,6 +81,11 @@ class PageCycler(page_measurement.PageMeasurement):
     # Old commandline flags used for reference builds.
     options.AppendExtraBrowserArg('--dom-automation')
 
+    # TODO(tonyg): NetworkMetric should be responsible for setting these.
+    # http://crbug.com/271177
+    options.AppendExtraBrowserArg('--enable-benchmarking')
+    options.AppendExtraBrowserArg('--enable-stats-table')
+
     # Temporarily disable typical_25 page set on mac.
     if sys.platform == 'darwin' and sys.argv[-1].endswith('/typical_25.json'):
       print 'typical_25 is currently disabled on mac. Skipping test.'
@@ -121,6 +129,9 @@ class PageCycler(page_measurement.PageMeasurement):
     for h in self._histograms:
       h.GetValue(page, tab, results)
 
+    self._network_metric.Stop(page, tab)
+    self._network_metric.AddResults(tab, results)
+
     results.Add('page_load_time', 'ms',
                 int(float(tab.EvaluateJavaScript('__pc_load_time'))),
                 chart_name='times')