Revert of telemetry: Fix startup benchmarks so that all metrics get recorded.

tools/perf/measurements/startup.py

Index: tools/perf/measurements/startup.py
diff --git a/tools/perf/measurements/startup.py b/tools/perf/measurements/startup.py
index e1cbc3ace9225a70ec725084cfdd62ea76b95d20..6acf9d2c65b4da9147d5bf604933b70a9538df97 100644
--- a/tools/perf/measurements/startup.py
+++ b/tools/perf/measurements/startup.py
@@ -29,6 +29,10 @@ class Startup(page_test.PageTest):
     ])
     keychain_metric.KeychainMetric.CustomizeBrowserOptions(options)
 
+  def RunNavigateSteps(self, page, tab):
+    # Overriden so that no page navigation occurs - startup to the NTP.
+    pass
+
   def ValidateAndMeasurePage(self, page, tab, results):
     keychain_metric.KeychainMetric().AddResults(tab, results)
     startup_metric.StartupMetric().AddResults(tab, results)