[iOS] Support for chrome://version

ios/chrome/browser/ui/webui/version_ui.h

 // Copyright 2015 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 IOS_CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_
-#define IOS_CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_
+#ifndef IOS_CHROME_BROWSER_UI_WEBUI_VERSION_UI_H_
+#define IOS_CHROME_BROWSER_UI_WEBUI_VERSION_UI_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "ios/public/provider/web/web_ui_ios_controller.h"
 
-namespace web {
-class WebUIIOS;
-}
-
-class AboutUI : public web::WebUIIOSController {
+// The WebUI handler for chrome://version.
+class VersionUI : public web::WebUIIOSController {
  public:
-  explicit AboutUI(web::WebUIIOS* web_ui, const std::string& name);
-  ~AboutUI() override;
+  explicit VersionUI(web::WebUIIOS* web_ui);
+  ~VersionUI() override;
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(AboutUI);
+  DISALLOW_COPY_AND_ASSIGN(VersionUI);
 };
 
-#endif  // IOS_CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_
+#endif  // IOS_CHROME_BROWSER_UI_WEBUI_VERSION_UI_H_