mac: Expose keychain access frequency to Telemetry.

tools/perf/measurements/media.py

Index: tools/perf/measurements/media.py
diff --git a/tools/perf/measurements/media.py b/tools/perf/measurements/media.py
index 2e58ed7cedff0933b3a4aaa22655b25cbf2590c1..a60b0eb1702a158cd2445d5391f254e0f38ab8fc 100644
--- a/tools/perf/measurements/media.py
+++ b/tools/perf/measurements/media.py
@@ -2,14 +2,14 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from measurements import PageTestMeasurement
 from metrics import cpu
 from metrics import media
 from metrics import system_memory
 from metrics import power
-from telemetry.page import page_test
 
 
-class Media(page_test.PageTest):
+class Media(PageTestMeasurement):
   """The MediaMeasurement class gathers media-related metrics on a page set.
 
   Media metrics recorded are controlled by metrics/media.js.  At the end of the
@@ -30,6 +30,7 @@ class Media(page_test.PageTest):
 
   def CustomizeBrowserOptions(self, options):
     # Needed to run media actions in JS on touch-based devices as on Android.
+    super(Media, self).CustomizeBrowserOptions(options)
     options.AppendExtraBrowserArgs(
         '--disable-gesture-requirement-for-media-playback')
     power.PowerMetric.CustomizeBrowserOptions(options)
@@ -52,6 +53,7 @@ class Media(page_test.PageTest):
 
   def ValidateAndMeasurePage(self, page, tab, results):
     """Measure the page's performance."""
+    super(Media, self).ValidateAndMeasurePage(page, tab, results)
     self._media_metric.Stop(page, tab)
     trace_name = self._media_metric.AddResults(tab, results)