Enable Config::MUS to use classic IME instead of servicified IME.

ui/aura/mus/window_tree_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/mus/window_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 1265 matching lines @@
 
 void WindowTreeClient::OnWindowInputEvent(uint32_t event_id,
                                           Id window_id,
                                           int64_t display_id,
                                           std::unique_ptr<ui::Event> event,
                                           bool matches_pointer_watcher) {
   DCHECK(event);
 
   WindowMus* window = GetWindowByServerId(window_id);  // May be null.
 
-  if (event->IsKeyEvent()) {
-    DCHECK(!matches_pointer_watcher);  // PointerWatcher isn't for key events.
-    if (!window || !window->GetWindow()->GetHost()) {
-      tree_->OnWindowInputEventAck(event_id, ui::mojom::EventResult::UNHANDLED);
-      return;
-    }
-    InputMethodMus* input_method = GetWindowTreeHostMus(window)->input_method();
-    input_method->DispatchKeyEvent(event->AsKeyEvent(),
-                                   CreateEventResultCallback(event_id));
-    return;
-  }
-
   if (matches_pointer_watcher && has_pointer_watcher_) {
     DCHECK(event->IsPointerEvent());
     std::unique_ptr<ui::Event> event_in_dip(ui::Event::Clone(*event));
     ConvertEventLocationToDip(display_id, event_in_dip->AsLocatedEvent());
     delegate_->OnPointerEventObserved(*event_in_dip->AsPointerEvent(),
                                       window ? window->GetWindow() : nullptr);
   }
 
   // If the window has already been deleted, use |event| to update event states
   // kept in aura::Env.
   if (!window || !window->GetWindow()->GetHost()) {
     EnvInputStateController* env_controller =
         Env::GetInstance()->env_controller();
     std::unique_ptr<ui::Event> mapped_event = MapEvent(*event.get());
     if (mapped_event->IsMouseEvent()) {
       env_controller->UpdateStateForMouseEvent(nullptr,
                                                *mapped_event->AsMouseEvent());
     } else if (mapped_event->IsTouchEvent()) {
       env_controller->UpdateStateForTouchEvent(*mapped_event->AsTouchEvent());
     }
     tree_->OnWindowInputEventAck(event_id, ui::mojom::EventResult::UNHANDLED);
     return;
   }
 
+  if (event->IsKeyEvent()) {
+    InputMethodMus* input_method = GetWindowTreeHostMus(window)->input_method();
+    if (input_method) {
+      input_method->DispatchKeyEvent(event->AsKeyEvent(),
+                                     CreateEventResultCallback(event_id));
+      return;
+    }
+  }
+
   EventAckHandler ack_handler(CreateEventResultCallback(event_id));
   // TODO(moshayedi): crbug.com/617222. No need to convert to ui::MouseEvent or
   // ui::TouchEvent once we have proper support for pointer events.
   std::unique_ptr<ui::Event> mapped_event = MapEvent(*event.get());
   DispatchEventToTarget(mapped_event.get(), window);
   ack_handler.set_handled(mapped_event->handled());
 }
 
 void WindowTreeClient::OnPointerEventObserved(std::unique_ptr<ui::Event> event,
                                               uint32_t window_id,
@@ skipping 707 matching lines @@
   return ScheduleInFlightChange(base::MakeUnique<InFlightCaptureChange>(
       this, capture_synchronizer_.get(), window));
 }
 
 uint32_t WindowTreeClient::CreateChangeIdForFocus(WindowMus* window) {
   return ScheduleInFlightChange(base::MakeUnique<InFlightFocusChange>(
       this, focus_synchronizer_.get(), window));
 }
 
 }  // namespace aura