Cleanup MenuRunner API

ui/views/controls/menu/menu_runner_impl_interface.h

Index: ui/views/controls/menu/menu_runner_impl_interface.h
diff --git a/ui/views/controls/menu/menu_runner_impl_interface.h b/ui/views/controls/menu/menu_runner_impl_interface.h
index e55f92cb629349354a6db19b1da49f0bb9694bc9..bac3058c2386e4d5a70cb2fffdcec3bac8c58757 100644
--- a/ui/views/controls/menu/menu_runner_impl_interface.h
+++ b/ui/views/controls/menu/menu_runner_impl_interface.h
@@ -34,12 +34,11 @@ class MenuRunnerImplInterface {
   virtual void Release() = 0;
 
   // Runs the menu. See MenuRunner::RunMenuAt for more details.
-  virtual MenuRunner::RunResult RunMenuAt(Widget* parent,
-                                          MenuButton* button,
-                                          const gfx::Rect& bounds,
-                                          MenuAnchorPosition anchor,
-                                          int32_t run_types)
-      WARN_UNUSED_RESULT = 0;
+  virtual void RunMenuAt(Widget* parent,
+                         MenuButton* button,
+                         const gfx::Rect& bounds,
+                         MenuAnchorPosition anchor,
+                         int32_t run_types) = 0;
 
   // Hides and cancels the menu.
   virtual void Cancel() = 0;