Distinguish between keystroke and character events.

ui/events/ozone/events_ozone.cc

Index: ui/events/ozone/events_ozone.cc
diff --git a/ui/events/ozone/events_ozone.cc b/ui/events/ozone/events_ozone.cc
index 9ab835c1ff839ab20aca211466906acb7980d5da..6eb2bdc721de7f515748f4ad8b87d676e37ef5e6 100644
--- a/ui/events/ozone/events_ozone.cc
+++ b/ui/events/ozone/events_ozone.cc
@@ -64,6 +64,12 @@ uint32 PlatformKeycodeFromNative(const base::NativeEvent& native_event) {
   return event->platform_keycode();
 }
 
+bool IsCharFromNative(const base::NativeEvent& native_event) {
+  const ui::KeyEvent* event = static_cast<const ui::KeyEvent*>(native_event);
+  DCHECK(event->IsKeyEvent());
+  return event->is_char();
+}
+
 gfx::Vector2d GetMouseWheelOffset(const base::NativeEvent& native_event) {
   const ui::MouseWheelEvent* event =
       static_cast<const ui::MouseWheelEvent*>(native_event);