Add metrics to all items in the 'wrench' menu

chrome/browser/ui/views/toolbar/wrench_menu.h

Index: chrome/browser/ui/views/toolbar/wrench_menu.h
diff --git a/chrome/browser/ui/views/toolbar/wrench_menu.h b/chrome/browser/ui/views/toolbar/wrench_menu.h
index 267f1deb9f4e4527e01984cc97f94573562aab6d..bab27381ea68114f5d619b437bec216e54772ca5 100644
--- a/chrome/browser/ui/views/toolbar/wrench_menu.h
+++ b/chrome/browser/ui/views/toolbar/wrench_menu.h
@@ -10,6 +10,8 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
+#include "base/time/time.h"
+#include "base/timer/elapsed_timer.h"
 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -184,6 +186,8 @@ class WrenchMenu : public views::MenuDelegate,
 
   ObserverList<WrenchMenuObserver> observer_list_;
 
+  base::ElapsedTimer menu_opened_timer_;

[Alexei Svitkine (slow), 2014/11/17 18:51:18]

Add a comment.

[edwardjung, 2014/11/17 19:18:56]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(WrenchMenu);
 };