ppapi: PPB_VpnProvider: Implement Service Helper

chrome/browser/chrome_content_browser_client.h

 // Copyright (c) 2012 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_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 210 matching lines @@
   void DidCreatePpapiPlugin(content::BrowserPpapiHost* browser_host) override;
   content::BrowserPpapiHost* GetExternalBrowserPpapiHost(
       int plugin_process_id) override;
   bool AllowPepperSocketAPI(
       content::BrowserContext* browser_context,
       const GURL& url,
       bool private_api,
       const content::SocketPermissionRequest* params) override;
   bool IsPepperVpnProviderAPIAllowed(content::BrowserContext* browser_context,
                                      const GURL& url) override;
+  std::unique_ptr<content::VpnServiceProxy> GetVpnServiceProxy(
+      content::BrowserContext* browser_context) override;
   ui::SelectFilePolicy* CreateSelectFilePolicy(
       content::WebContents* web_contents) override;
   void GetAdditionalAllowedSchemesForFileSystem(
       std::vector<std::string>* additional_schemes) override;
   void GetSchemesBypassingSecureContextCheckWhitelist(
       std::set<std::string>* schemes) override;
   void GetURLRequestAutoMountHandlers(
       std::vector<storage::URLRequestAutoMountHandler>* handlers) override;
   void GetAdditionalFileSystemBackends(
       content::BrowserContext* browser_context,
@@ skipping 100 matching lines @@
   // Vector of additional ChromeContentBrowserClientParts.
   // Parts are deleted in the reverse order they are added.
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_