Add start/finish navigation to startup metrics.

components/startup_metric_utils/startup_metric_utils.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_STARTUP_METRIC_UTILS_STARTUP_METRIC_UTILS_H_
 #define COMPONENTS_STARTUP_METRIC_UTILS_STARTUP_METRIC_UTILS_H_
 
 #include <string>
 
 #include "base/time/time.h"
@@ skipping 56 matching lines @@
 
 // Call this with the time delta that the browser spent opening its tabs.
 void RecordBrowserOpenTabsDelta(const base::TimeDelta& delta);
 
 // Call this with the time when the first web contents loaded its main frame.
 void RecordFirstWebContentsMainFrameLoad(const base::Time& time);
 
 // Call this with the time when the first web contents had a non-empty paint.
 void RecordFirstWebContentsNonEmptyPaint(const base::Time& time);
 
+// Call this with the time when the first web contents began navigating its main
+// frame.
+void RecordFirstWebContentsMainNavigationStart(const base::Time& time);
+
+// Call this with the time when the first web contents successfully committed
+// its navigation for the main frame.
+void RecordFirstWebContentsMainNavigationFinished(const base::Time& time);
+
 // Returns the time of main entry recorded from RecordMainEntryPointTime.
 // Returns a null Time if a value has not been recorded yet.
 // This method is expected to be called from the UI thread.
 base::Time MainEntryPointTime();
 
 // Returns the startup type. This is only currently supported on the Windows
 // platform and will simply return UNCERTAIN_STARTUP_TYPE on other platforms.
 // This is only valid after a call to RecordBrowserMainMessageLoopStart().
 StartupTemperature GetStartupTemperature();
 
 }  // namespace startup_metric_utils
 
 #endif  // COMPONENTS_STARTUP_METRIC_UTILS_STARTUP_METRIC_UTILS_H_