Fix calculation of usable area of screen when VK is shown.

ash/shell/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/shell/keyboard_controller_proxy_stub.h"
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ui/aura/window.h"
-#include "ui/wm/core/input_method_event_filter.h"
+#include "ui/base/ime/mock_input_method.h"
 
 using namespace content;
 
 namespace ash {
 
 KeyboardControllerProxyStub::KeyboardControllerProxyStub() {
 }
 
 KeyboardControllerProxyStub::~KeyboardControllerProxyStub() {
 }
 
 bool KeyboardControllerProxyStub::HasKeyboardWindow() const {
   return keyboard_;
 }
 
 aura::Window* KeyboardControllerProxyStub::GetKeyboardWindow() {
   if (!keyboard_) {
     keyboard_.reset(new aura::Window(&delegate_));
     keyboard_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
   }
   return keyboard_.get();
 }
 
 BrowserContext* KeyboardControllerProxyStub::GetBrowserContext() {
   // TODO(oshima): investigate which profile to use.
   return Shell::GetInstance()->delegate()->GetActiveBrowserContext();
 }
 
 ui::InputMethod* KeyboardControllerProxyStub::GetInputMethod() {
-  return Shell::GetInstance()->input_method_filter()->input_method();
+  if (!input_method_)
+    input_method_.reset(new ui::MockInputMethod(NULL));
+  return input_method_.get();
 }
 
 void KeyboardControllerProxyStub::RequestAudioInput(
     WebContents* web_contents,
     const MediaStreamRequest& request,
     const MediaResponseCallback& callback) {
 }
 
 void KeyboardControllerProxyStub::LoadSystemKeyboard() {
 }
 
 void KeyboardControllerProxyStub::ReloadKeyboardIfNeeded() {
 }
 
 }  // namespace ash