Revert of DevTools: move front-end URL handling to DevToolsUIBindingds

chrome/browser/ui/webui/devtools_ui.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_DEVTOOLS_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_DEVTOOLS_UI_H_
 
+#include <memory>
+
+#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/browser/devtools/devtools_ui_bindings.h"
 #include "content/public/browser/web_ui_controller.h"
 
 class DevToolsUI : public content::WebUIController {
  public:
   static GURL GetProxyURL(const std::string& frontend_url);
   static GURL GetRemoteBaseURL();
+  static GURL SanitizeFrontendURL(const GURL& url);
 
   explicit DevToolsUI(content::WebUI* web_ui);
   ~DevToolsUI() override;
 
  private:
-  DevToolsUIBindings bindings_;
+  std::unique_ptr<DevToolsUIBindings> bindings_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_DEVTOOLS_UI_H_