ppapi: PPB_VpnProvider: Implement Service Helper

chrome/browser/extensions/chrome_content_browser_client_extensions_part.h

 // Copyright 2014 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_EXTENSIONS_CHROME_CONTENT_BROWSER_CLIENT_EXTENSIONS_PART_H_
 #define CHROME_BROWSER_EXTENSIONS_CHROME_CONTENT_BROWSER_CLIENT_EXTENSIONS_PART_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/browser/chrome_content_browser_client_parts.h"
 
 namespace content {
 class ResourceContext;
+class VpnServiceProxy;
 }
 
 namespace extensions {
 
 // Implements the extensions portion of ChromeContentBrowserClient.
 class ChromeContentBrowserClientExtensionsPart
     : public ChromeContentBrowserClientParts {
  public:
   ChromeContentBrowserClientExtensionsPart();
   ~ChromeContentBrowserClientExtensionsPart() override;
@@ skipping 34 matching lines @@
   // Similiar to ChromeContentBrowserClient::ShouldAllowOpenURL(), but the
   // return value indicates whether to use |result| or not.
   static bool ShouldAllowOpenURL(content::SiteInstance* site_instance,
                                  const GURL& from_url,
                                  const GURL& to_url,
                                  bool* result);
 
   // Helper function to call InfoMap::SetSigninProcess().
   static void SetSigninProcess(content::SiteInstance* site_instance);
 
+  // Creates a new VpnServiceProxy. The caller owns the returned value. It's
+  // valid to return nullptr.
+  static std::unique_ptr<content::VpnServiceProxy> GetVpnServiceProxy(
+      content::BrowserContext* browser_context);
+
  private:
   // ChromeContentBrowserClientParts:
   void RenderProcessWillLaunch(content::RenderProcessHost* host) override;
   void SiteInstanceGotProcess(content::SiteInstance* site_instance) override;
   void SiteInstanceDeleting(content::SiteInstance* site_instance) override;
   void OverrideWebkitPrefs(content::RenderViewHost* rvh,
                            content::WebPreferences* web_prefs) override;
   void BrowserURLHandlerCreated(content::BrowserURLHandler* handler) override;
   void GetAdditionalAllowedSchemesForFileSystem(
       std::vector<std::string>* additional_allowed_schemes) override;
   void GetURLRequestAutoMountHandlers(
       std::vector<storage::URLRequestAutoMountHandler>* handlers) override;
   void GetAdditionalFileSystemBackends(
       content::BrowserContext* browser_context,
       const base::FilePath& storage_partition_path,
       ScopedVector<storage::FileSystemBackend>* additional_backends) override;
   void AppendExtraRendererCommandLineSwitches(
       base::CommandLine* command_line,
       content::RenderProcessHost* process,
       Profile* profile) override;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClientExtensionsPart);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CHROME_CONTENT_BROWSER_CLIENT_EXTENSIONS_PART_H_