More accelerator code leanup

ui/wm/core/accelerator_filter.h

Index: ui/wm/core/accelerator_filter.h
diff --git a/ui/wm/core/accelerator_filter.h b/ui/wm/core/accelerator_filter.h
index d42a6e29c01256fe2b92a4014a3a95ce949ea997..4e5295e098b8d81a15c563eee559dc2ab6be8b51 100644
--- a/ui/wm/core/accelerator_filter.h
+++ b/ui/wm/core/accelerator_filter.h
@@ -10,6 +10,10 @@
 #include "ui/events/event_handler.h"
 #include "ui/wm/wm_export.h"
 
+namespace ui {
+class Accelerator;
+}
+
 namespace wm {
 class AcceleratorDelegate;
 
@@ -29,6 +33,8 @@ class WM_EXPORT AcceleratorFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(AcceleratorFilter);
 };
 
+ui::Accelerator CreateAcceleratorFromKeyEvent(const ui::KeyEvent& key_event);
+
 }  // namespace wm
 
 #endif  // UI_WM_CORE_ACCELERATOR_FILTER_H_