Create and show the virtual keyboard.

ui/keyboard/keyboard_controller_proxy.h

Index: ui/keyboard/keyboard_controller_proxy.h
diff --git a/ui/keyboard/keyboard_controller_proxy.h b/ui/keyboard/keyboard_controller_proxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..434b5f898edc4036f861db1acec55a434b1de1e3
--- /dev/null
+++ b/ui/keyboard/keyboard_controller_proxy.h
@@ -0,0 +1,28 @@
+// Copyright (c) 2013 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 UI_KEYBOARD_KEYBOARD_CONTROLLER_PROXY_H_
+#define UI_KEYBOARD_KEYBOARD_CONTROLLER_PROXY_H_
+
+#include "ui/keyboard/keyboard_export.h"
+
+namespace aura {
+class Window;
+}  // namespace aura
+
+namespace keyboard {
+
+// A proxy used by the KeyboardController to get access to the virtual
+// keyboard window.
+class KEYBOARD_EXPORT KeyboardControllerProxy {
+ public:
+  virtual ~KeyboardControllerProxy() {}
+
+  // Get the virtual keyboard window.
+  virtual aura::Window* GetKeyboardWindow() = 0;
+};
+
+}  // namespace message_center
+
+#endif  // UI_KEYBOARD_KEYBOARD_CONTROLLER_PROXY_H_