rAc: Enforce a 3 second grace period for generated card bubble.

ui/views/widget/widget.h

Index: ui/views/widget/widget.h
diff --git a/ui/views/widget/widget.h b/ui/views/widget/widget.h
index d8a32001a3b120cef3dda2d75e09dc611afd994d..1a7733f762412e2d595f2dd055aa9b96eccf726d 100644
--- a/ui/views/widget/widget.h
+++ b/ui/views/widget/widget.h
@@ -631,7 +631,9 @@ class VIEWS_EXPORT Widget : public internal::NativeWidgetDelegate,
   }
 
   // Sets capture to the specified view. This makes it so that all mouse, touch
-  // and gesture events go to |view|.
+  // and gesture events go to |view|. |view| may be NULL, in which case the
+  // widget will still capture events but they will be handled by the view
+  // that would normally handle them.
   void SetCapture(View* view);
 
   // Releases capture.
@@ -852,6 +854,10 @@ class VIEWS_EXPORT Widget : public internal::NativeWidgetDelegate,
   bool last_mouse_event_was_move_;
   gfx::Point last_mouse_event_position_;
 
+  // True if event capture was set via SetCapture(). Reset to false when
+  // ReleaseCapture() is invoked.
+  bool capture_explicitly_set_;
+
   // See description in GetRootLayers().
   std::vector<ui::Layer*> root_layers_;