events: Dispatch all events through EventHandler::OnEvent from the dispatcher.

ui/base/events/event_dispatcher.cc

Index: ui/base/events/event_dispatcher.cc
diff --git a/ui/base/events/event_dispatcher.cc b/ui/base/events/event_dispatcher.cc
index 3308ac9ea963649f7becee611c00992805b655d5..188523d4cfebb8d28f6059d5c50962e42fa4861a 100644
--- a/ui/base/events/event_dispatcher.cc
+++ b/ui/base/events/event_dispatcher.cc
@@ -24,31 +24,6 @@ EventResult EventDispatcher::DispatchEventToSingleHandler(EventHandler* handler,
   return handler->OnEvent(event);
 }
 
-EventResult EventDispatcher::DispatchEventToSingleHandler(EventHandler* handler,
-                                                          KeyEvent* event) {
-  return handler->OnKeyEvent(event);
-}
-
-EventResult EventDispatcher::DispatchEventToSingleHandler(EventHandler* handler,
-                                                          MouseEvent* event) {
-  return handler->OnMouseEvent(event);
-}
-
-EventResult EventDispatcher::DispatchEventToSingleHandler(EventHandler* handler,
-                                                          ScrollEvent* event) {
-  return handler->OnScrollEvent(event);
-}
-
-EventResult EventDispatcher::DispatchEventToSingleHandler(EventHandler* handler,
-                                                          TouchEvent* event) {
-  return handler->OnTouchEvent(event);
-}
-
-EventResult EventDispatcher::DispatchEventToSingleHandler(EventHandler* handler,
-                                                          GestureEvent* event) {
-  return handler->OnGestureEvent(event);
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // EventDispatcher::ScopedDispatchHelper