Add a full screen virtual keyboard to virtual keyboard root window

ash/keyboard_controller_proxy_stub.cc

-// Copyright 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.
-
-#include "ash/keyboard_controller_proxy_stub.h"
-
-#include "ash/shell.h"
-#include "ui/views/corewm/input_method_event_filter.h"
-
-using namespace content;
-
-namespace ash {
-
-KeyboardControllerProxyStub::KeyboardControllerProxyStub() {
-}
-
-KeyboardControllerProxyStub::~KeyboardControllerProxyStub() {
-}
-
-BrowserContext* KeyboardControllerProxyStub::GetBrowserContext() {
-  return Shell::GetInstance()->browser_context();
-}
-
-ui::InputMethod* KeyboardControllerProxyStub::GetInputMethod() {
-  return Shell::GetInstance()->input_method_filter()->input_method();
-}
-
-void KeyboardControllerProxyStub::RequestAudioInput(
-    WebContents* web_contents,
-    const MediaStreamRequest& request,
-    const MediaResponseCallback& callback) {
-}
-
-}  // namespace ash