athena: Add support for virtual keyboard.

athena/virtual_keyboard/public/virtual_keyboard_manager.h

+// 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.
+
+#ifndef ATHENA_VIRTUAL_KEYBOARD_PUBLIC_VIRTUAL_KEYBOARD_MANAGER_H_
+#define ATHENA_VIRTUAL_KEYBOARD_PUBLIC_VIRTUAL_KEYBOARD_MANAGER_H_
+
+#include "athena/athena_export.h"
+
+namespace aura {
+class Window;
+}
+
+namespace content {
+class BrowserContext;
+}
+
+namespace athena {
+
+class ATHENA_EXPORT VirtualKeyboardManager {
+ public:
+  static VirtualKeyboardManager* Create(content::BrowserContext* context);
+  static VirtualKeyboardManager* Get();
+  static void Shutdown();
+};
+
+}  // namespace athena
+
+#endif  // ATHENA_VIRTUAL_KEYBOARD_PUBLIC_VIRTUAL_KEYBOARD_MANAGER_H_