Move enum MenuAnchorPosition to reduce deps on menu_item_view.h

chrome/browser/ui/views/infobars/infobar_view.h

Index: chrome/browser/ui/views/infobars/infobar_view.h
diff --git a/chrome/browser/ui/views/infobars/infobar_view.h b/chrome/browser/ui/views/infobars/infobar_view.h
index 49a5d5bd689b9d62e4705707abb64d9d6d583f7f..86991c81269aee22f9079108f428f4d24dcbff20 100644
--- a/chrome/browser/ui/views/infobars/infobar_view.h
+++ b/chrome/browser/ui/views/infobars/infobar_view.h
@@ -11,7 +11,7 @@
 #include "components/infobars/core/infobar_container.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "ui/views/controls/button/button.h"
-#include "ui/views/controls/menu/menu_item_view.h"
+#include "ui/views/controls/menu/menu_types.h"
 #include "ui/views/focus/external_focus_tracker.h"
 
 namespace ui {
@@ -108,7 +108,7 @@ class InfoBarView : public infobars::InfoBar,
   // calls to RunMenu() in this case.)
   void RunMenuAt(ui::MenuModel* menu_model,
                  views::MenuButton* button,
-                 views::MenuItemView::AnchorPosition anchor);
+                 views::MenuAnchorPosition anchor);
 
  private:
   // Does the actual work for AssignWidths().  Assumes |labels| is sorted by