Open the WrenchMenu on mouseover when dragging a browser action

ui/views/controls/menu/menu_delegate.h

Index: ui/views/controls/menu/menu_delegate.h
diff --git a/ui/views/controls/menu/menu_delegate.h b/ui/views/controls/menu/menu_delegate.h
index 6c51d5948b476685f17c7541ed2e1feab6c57517..9a6860e2c45e611dfe35ddbe7ac8ade6f63703c1 100644
--- a/ui/views/controls/menu/menu_delegate.h
+++ b/ui/views/controls/menu/menu_delegate.h
@@ -213,6 +213,10 @@ class VIEWS_EXPORT MenuDelegate {
   // Views that are not MenuItemViews.
   virtual bool ShouldCloseOnDragComplete();
 
+  // Returns true if a subview is performing a drag and drop operation, and the
+  // menu shouldn't be closed.
+  virtual bool InNestedDrag();
+
   // Notification that the user has highlighted the specified item.
   virtual void SelectionChanged(MenuItemView* menu) {
   }