Patch Dartium branch of Chromium 1700 to run performance tests on buildbot

The buildbot code requires an option in run_perf.py that was added after branch 1700.

R=vsm@google.com

Review URL: https://codereview.chromium.org/149113006

git-svn-id: svn://svn.chromium.org/chrome/branches/dart/1700/src@249028 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/tools/telemetry/telemetry/core/browser_options.py b/tools/telemetry/telemetry/core/browser_options.py
index acbe9e5..9200d46 100644
--- a/tools/telemetry/telemetry/core/browser_options.py
+++ b/tools/telemetry/telemetry/core/browser_options.py
@@ -42,6 +42,8 @@
     self.page_filter = None
     self.page_filter_exclude = None
 
+    self.report_root_metrics = False
+
     self.repeat_options = repeat_options.RepeatOptions()
     self.browser_options = BrowserOptions()
     self.output_file = None
@@ -133,6 +135,9 @@
         'test is executed at maximum CPU speed in order to minimize noise '
         '(specially important for dashboards / continuous builds). '
         'This option prevents Telemetry from tweaking such platform settings.')
+    group.add_option(
+        '--report-root-metrics', action='store_true',dest='report_root_metrics',
+        help='Enable metrics that require root access to record.')
     group.add_option('--android-rndis', dest='android_rndis', default=False,
         action='store_true', help='Use RNDIS forwarding on Android.')
     group.add_option('--no-android-rndis', dest='android_rndis',