Privatize StrongBinding lifetime management

components/web_restrictions/browser/web_restrictions_mojo_implementation.h

 // Copyright 2016 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 COMPONENTS_WEB_RESTRICTIONS_BROWSER_WEB_RESTRICTIONS_MOJO_IMPLEMENTATION_H_
 #define COMPONENTS_WEB_RESTRICTIONS_BROWSER_WEB_RESTRICTIONS_MOJO_IMPLEMENTATION_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "components/web_restrictions/interfaces/web_restrictions.mojom.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace web_restrictions {
 
 class WebRestrictionsClient;
 
 class WebRestrictionsMojoImplementation : public mojom::WebRestrictions {
  public:
+  explicit WebRestrictionsMojoImplementation(WebRestrictionsClient* client);
+  ~WebRestrictionsMojoImplementation() override;
+
   static void Create(WebRestrictionsClient* client,
                      mojo::InterfaceRequest<mojom::WebRestrictions> request);
 
  private:
-  WebRestrictionsMojoImplementation(
-      WebRestrictionsClient* client,
-      mojo::InterfaceRequest<mojom::WebRestrictions> request);
-  ~WebRestrictionsMojoImplementation() override;
-
   void GetResult(const std::string& url,
                  const GetResultCallback& callback) override;
   void RequestPermission(const std::string& url,
                          const RequestPermissionCallback& callback) override;
 
-  mojo::StrongBinding<mojom::WebRestrictions> binding_;
   WebRestrictionsClient* web_restrictions_client_;
 };
 
 }  // namespace web_restrictions
 #endif  // COMPONENTS_WEB_RESTRICTIONS_BROWSER_WEB_RESTRICTIONS_MOJO_IMPLEMENTATION_H_