Introduce IBusBridge for ibus-less implementation.

chromeos/ime/ibus_bridge.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 "chromeos/ime/ibus_bridge.h"
+
+#include "base/logging.h"
+#include "base/memory/singleton.h"
+
+namespace chromeos {
+
+IBusBridge::IBusBridge()
+  : input_context_handler_(NULL),
+    engine_handler_(NULL),
+    candidate_window_handler_(NULL),
+    panel_handler_(NULL) {
+}
+
+// static
+IBusBridge* IBusBridge::GetInstance() {
+  return Singleton<IBusBridge>::get();
+}
+
+}  // namespace chromeos