Makes DesktopWindowTreeHostXxx to dispatch key event to InputMethod.

ash/host/ash_window_tree_host_x11.cc

Index: ash/host/ash_window_tree_host_x11.cc
diff --git a/ash/host/ash_window_tree_host_x11.cc b/ash/host/ash_window_tree_host_x11.cc
index 9ac9d15f7837c30799822d947429840a0c1b5092..1999052530ebac1da66e86527c4d23cc592c6a10 100644
--- a/ash/host/ash_window_tree_host_x11.cc
+++ b/ash/host/ash_window_tree_host_x11.cc
@@ -239,16 +239,14 @@ void AshWindowTreeHostX11::TranslateAndDispatchLocatedEvent(
 bool AshWindowTreeHostX11::DispatchKeyEventPostIME(const ui::KeyEvent& event) {
   ui::KeyEvent event_copy(event);
   input_method_handler()->SetPostIME(true);
-  ui::EventSource::DeliverEventToProcessor(&event_copy);
+  ui::EventDispatchDetails details =
+      event_processor()->OnEventFromSource(&event_copy);
+  if (details.dispatcher_destroyed)
+    return true;
   input_method_handler()->SetPostIME(false);
   return event_copy.stopped_propagation();
 }
 
-ui::EventDispatchDetails AshWindowTreeHostX11::DeliverEventToProcessor(
-    ui::Event* event) {
-  return ui::EventSource::DeliverEventToProcessor(event);
-}
-
 #if defined(OS_CHROMEOS)
 void AshWindowTreeHostX11::SetCrOSTapPaused(bool state) {
   if (!ui::IsXInput2Available())