Pause close timer of notification while it's active

ui/message_center/views/message_popup_collection.h

Index: ui/message_center/views/message_popup_collection.h
diff --git a/ui/message_center/views/message_popup_collection.h b/ui/message_center/views/message_popup_collection.h
index fa0068dec844f35dc776705d10837d76e2d6aaf4..c3edcb1a53051833754f95a79302e0f44f449a07 100644
--- a/ui/message_center/views/message_popup_collection.h
+++ b/ui/message_center/views/message_popup_collection.h
@@ -72,6 +72,9 @@ class MESSAGE_CENTER_EXPORT MessagePopupCollection
 
   void MarkAllPopupsShown();
 
+  void PausePopupTimers();
+  void RestartPopupTimers();
+
   // Since these events are really coming from individual toast widgets,
   // it helps to be able to keep track of the sender.
   void OnMouseEntered(ToastContentsView* toast_entered);
@@ -165,6 +168,8 @@ class MESSAGE_CENTER_EXPORT MessagePopupCollection
   // Only to be used when user_is_closing_toasts_by_clicking_ is true.
   int target_top_edge_;
 
+  int timer_pause_counter_ = 0;

[yhanada, 2017/04/04 04:24:09]

It's great to add comment about what this variable stands for.

[yoshiki, 2017/04/04 04:58:27]

Done.

+
   // Weak, only exists temporarily in tests.
   std::unique_ptr<base::RunLoop> run_loop_for_test_;