[Code cleanup]Remove webui virtual keyboard code

ui/keyboard/keyboard.cc

 // 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.
 
 #include "ui/keyboard/keyboard.h"
 
 #include "base/files/file_path.h"
-#include "base/memory/singleton.h"
 #include "base/path_service.h"
-#include "content/public/browser/browser_context.h"
-#include "content/public/browser/web_ui_controller_factory.h"
 #include "ui/base/resource/resource_bundle.h"
-#include "ui/keyboard/keyboard_constants.h"
-#include "ui/keyboard/keyboard_ui_controller.h"
-#include "url/gurl.h"
-
-namespace {
-
-using content::BrowserContext;
-using content::WebUI;
-using content::WebUIController;
-
-class KeyboardWebUIControllerFactory : public content::WebUIControllerFactory {
- public:
-  // |WebUIControllerFactory| implementation:
-  virtual content::WebUI::TypeID GetWebUIType(
-      content::BrowserContext* browser_context,
-      const GURL& url) const OVERRIDE {
-    if (url == GURL(keyboard::kKeyboardWebUIURL))
-      return const_cast<KeyboardWebUIControllerFactory*>(this);
-
-    return WebUI::kNoWebUI;
-  }
-  virtual bool UseWebUIForURL(content::BrowserContext* browser_context,
-                              const GURL& url) const OVERRIDE {
-    return GetWebUIType(browser_context, url) != WebUI::kNoWebUI;
-  }
-  virtual bool UseWebUIBindingsForURL(content::BrowserContext* browser_context,
-                                      const GURL& url) const OVERRIDE {
-    return UseWebUIForURL(browser_context, url);
-  }
-  virtual content::WebUIController* CreateWebUIControllerForURL(
-      content::WebUI* web_ui,
-      const GURL& url) const OVERRIDE {
-    if (url == GURL(keyboard::kKeyboardWebUIURL))
-      return new keyboard::KeyboardUIController(web_ui);
-    return NULL;
-  }
-
-  static KeyboardWebUIControllerFactory* GetInstance() {
-    return Singleton<KeyboardWebUIControllerFactory>::get();
-  }
-
- protected:
-  KeyboardWebUIControllerFactory() {}
-  virtual ~KeyboardWebUIControllerFactory() {}
-
- private:
-  friend struct DefaultSingletonTraits<KeyboardWebUIControllerFactory>;
-
-  DISALLOW_COPY_AND_ASSIGN(KeyboardWebUIControllerFactory);
-};
-
-}  // namespace
 
 namespace keyboard {
 
 static bool initialized = false;
 
 void ResetKeyboardForTesting() {
-  content::WebUIControllerFactory::UnregisterFactoryForTesting(
-      KeyboardWebUIControllerFactory::GetInstance());
   initialized = false;
 }
 
 void InitializeKeyboard() {
   if (initialized)
     return;
   initialized = true;
 
   base::FilePath pak_dir;
   PathService::Get(base::DIR_MODULE, &pak_dir);
   base::FilePath pak_file = pak_dir.Append(
       FILE_PATH_LITERAL("keyboard_resources.pak"));
   ui::ResourceBundle::GetSharedInstance().AddDataPackFromPath(
       pak_file, ui::SCALE_FACTOR_100P);
-
-  content::WebUIControllerFactory::RegisterFactory(
-      KeyboardWebUIControllerFactory::GetInstance());
 }
 
 }  // namespace keyboard