Convert TrackedPreferenceValidationDelegate into a mojo interface.

chrome/browser/safe_browsing/services_delegate_stub.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 CHROME_BROWSER_SAFE_BROWSING_SERVICES_DELEGATE_STUB_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SERVICES_DELEGATE_STUB_H_
 
 #include "base/macros.h"
 #include "chrome/browser/safe_browsing/services_delegate.h"
 
 namespace safe_browsing {
 
 // Dummy ServicesDelegate implementation. Create via ServicesDelegate::Create().
 class ServicesDelegateStub : public ServicesDelegate {
  public:
   ServicesDelegateStub();
   ~ServicesDelegateStub() override;
 
  private:
   // ServicesDelegate:
   const scoped_refptr<SafeBrowsingDatabaseManager>& v4_local_database_manager()
       const override;
   void Initialize(bool v4_enabled = false) override;
   void InitializeCsdService(
       net::URLRequestContextGetter* context_getter) override;
   void ShutdownServices() override;
   void RefreshState(bool enable) override;
   void ProcessResourceRequest(const ResourceRequestInfo* request) override;
-  std::unique_ptr<TrackedPreferenceValidationDelegate>
-      CreatePreferenceValidationDelegate(Profile* profile) override;
+  std::unique_ptr<prefs::mojom::TrackedPreferenceValidationDelegate>
+  CreatePreferenceValidationDelegate(Profile* profile) override;
   void RegisterDelayedAnalysisCallback(
       const DelayedAnalysisCallback& callback) override;
   void AddDownloadManager(content::DownloadManager* download_manager) override;
   ClientSideDetectionService* GetCsdService() override;
   DownloadProtectionService* GetDownloadService() override;
 
   void StartOnIOThread(
     net::URLRequestContextGetter* url_request_context_getter,
     const V4ProtocolConfig& v4_config) override;
   void StopOnIOThread(bool shutdown) override;
 
   scoped_refptr<SafeBrowsingDatabaseManager> v4_local_database_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(ServicesDelegateStub);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SERVICES_DELEGATE_STUB_H_