Collect tab timing information for use in telementry-based startup tests

tools/perf/perf_tools/page_cycler.py

Index: tools/perf/perf_tools/page_cycler.py
diff --git a/tools/perf/perf_tools/page_cycler.py b/tools/perf/perf_tools/page_cycler.py
index 6c5d1da6703097051b2bbd08994ae92ab31d0a38..d10adcdf7dc6ba24b7dfd65461323cdd36d5ade7 100644
--- a/tools/perf/perf_tools/page_cycler.py
+++ b/tools/perf/perf_tools/page_cycler.py
@@ -62,10 +62,13 @@ class PageCycler(page_measurement.PageMeasurement):
       h.Start(page, tab)
 
   def CustomizeBrowserOptions(self, options):
-    options.AppendExtraBrowserArg('--dom-automation')
+    options.AppendExtraBrowserArg('--enable-stats-collection-bindings')
     options.AppendExtraBrowserArg('--js-flags=--expose_gc')
     options.AppendExtraBrowserArg('--no-sandbox')
 
+    # Old commandline flags used for reference builds.
+    options.AppendExtraBrowserArg('--dom-automation')
+
     # 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.'