Use EventHandler for IME

ash/display/display_controller.cc

 // Copyright (c) 2012 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 "ash/display/display_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 
 #include "ash/ash_switches.h"
 #include "ash/display/cursor_window_controller.h"
 #include "ash/display/display_layout_store.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/mirror_window_controller.h"
 #include "ash/display/root_window_transformers.h"
 #include "ash/host/ash_window_tree_host.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/root_window_transformer.h"
+#include "ash/ime/input_method_event_handler.h"
 #include "ash/magnifier/magnification_controller.h"
 #include "ash/magnifier/partial_magnification_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/root_window_settings.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "ash/wm/window_util.h"
@@ skipping 857 matching lines @@
       GetDisplayManager()->GetDisplayInfo(display.id());
   AshWindowTreeHostInitParams params_with_bounds(init_params);
   params_with_bounds.initial_bounds = display_info.bounds_in_native();
   params_with_bounds.offscreen =
       display.id() == DisplayManager::kUnifiedDisplayId;
   AshWindowTreeHost* ash_host = AshWindowTreeHost::Create(params_with_bounds);
   aura::WindowTreeHost* host = ash_host->AsWindowTreeHost();
   if (!input_method_) {  // Singleton input method instance for Ash.
     input_method_ = ui::CreateInputMethod(this, host->GetAcceleratedWidget());
     input_method_->OnFocus();
+    input_method_event_handler_.reset(
+        new InputMethodEventHandler(input_method_.get()));
   }
   host->SetSharedInputMethod(input_method_.get());
+  ash_host->set_input_method_handler(input_method_event_handler_.get());
 
   host->window()->SetName(base::StringPrintf(
       "%sRootWindow-%d", params_with_bounds.offscreen ? "Offscreen" : "",
       host_count++));
   host->window()->SetTitle(base::UTF8ToUTF16(display_info.name()));
   host->compositor()->SetBackgroundColor(SK_ColorBLACK);
   // No need to remove our observer observer because the DisplayController
   // outlives the host.
   host->AddObserver(this);
   InitRootWindowSettings(host->window())->display_id = display.id();
@@ skipping 15 matching lines @@
   Shell::GetInstance()->display_configurator_animation()
       ->StartFadeInAnimation();
 #endif
 }
 
 void DisplayController::SetMirrorModeAfterAnimation(bool mirror) {
   GetDisplayManager()->SetMirrorMode(mirror);
 }
 
 }  // namespace ash