Revert of chromeos: Remove some IME methods from ash::SystemTrayDelegate

chrome/browser/ui/ash/ime_controller_chromeos.cc

Index: chrome/browser/ui/ash/ime_controller_chromeos.cc
diff --git a/chrome/browser/ui/ash/ime_controller_chromeos.cc b/chrome/browser/ui/ash/ime_controller_chromeos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d252e36820c0085a924a10cfd8372653fd391176
--- /dev/null
+++ b/chrome/browser/ui/ash/ime_controller_chromeos.cc
@@ -0,0 +1,50 @@
+// 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 "chrome/browser/ui/ash/ime_controller_chromeos.h"
+
+#include "ui/base/accelerators/accelerator.h"
+#include "ui/base/ime/chromeos/input_method_manager.h"
+
+bool ImeController::CanCycleIme() {
+  chromeos::input_method::InputMethodManager* manager =
+      chromeos::input_method::InputMethodManager::Get();
+  DCHECK(manager);
+  if (!manager->GetActiveIMEState()) {
+    LOG(WARNING) << "Cannot cycle through input methods as they are not "
+                    "initialized yet.";
+    return false;
+  }
+  return manager->GetActiveIMEState()->CanCycleInputMethod();
+}
+
+void ImeController::HandleNextIme() {
+  chromeos::input_method::InputMethodManager* manager =
+      chromeos::input_method::InputMethodManager::Get();
+  manager->GetActiveIMEState()->SwitchToNextInputMethod();
+}
+
+void ImeController::HandlePreviousIme() {
+  chromeos::input_method::InputMethodManager* manager =
+      chromeos::input_method::InputMethodManager::Get();
+  manager->GetActiveIMEState()->SwitchToPreviousInputMethod();
+}
+
+bool ImeController::CanSwitchIme(const ui::Accelerator& accelerator) {
+  chromeos::input_method::InputMethodManager* manager =
+      chromeos::input_method::InputMethodManager::Get();
+  DCHECK(manager);
+  if (!manager->GetActiveIMEState()) {
+    LOG(WARNING) << "Cannot switch input methods as they are not "
+                    "initialized yet.";
+    return false;
+  }
+  return manager->GetActiveIMEState()->CanSwitchInputMethod(accelerator);
+}
+
+void ImeController::HandleSwitchIme(const ui::Accelerator& accelerator) {
+  chromeos::input_method::InputMethodManager* manager =
+      chromeos::input_method::InputMethodManager::Get();
+  manager->GetActiveIMEState()->SwitchInputMethod(accelerator);
+}