Remove KEYBOARD_EXPORT.

ui/keyboard/keyboard_event_filter.h

Index: ui/keyboard/keyboard_event_filter.h
diff --git a/ui/keyboard/keyboard_event_filter.h b/ui/keyboard/keyboard_event_filter.h
index 2af2acbbdd9f57a5896ed4cccdfa798ba015b430..2a86813011aea0dfa982f17822912f0a4ae63cb4 100644
--- a/ui/keyboard/keyboard_event_filter.h
+++ b/ui/keyboard/keyboard_event_filter.h
@@ -13,7 +13,7 @@ namespace keyboard {
 
 // EventFilter for the keyboard window, which intercepts events before they are
 // processed by the keyboard window.
-class KEYBOARD_EXPORT KeyboardEventFilter : public ui::EventHandler {
+class  KeyboardEventFilter : public ui::EventHandler {
  public:
   KeyboardEventFilter() = default;
   ~KeyboardEventFilter() override = default;