Convert TrackedPreferenceValidationDelegate into a mojo interface.

chrome/browser/prefs/profile_pref_store_manager.cc

 // 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.
 
 #include "chrome/browser/prefs/profile_pref_store_manager.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 84 matching lines @@
 void ProfilePrefStoreManager::SetPreferenceValidationRegistryPathForTesting(
     const base::string16* path) {
   DCHECK(!path->empty());
   g_preference_validation_registry_path_for_testing = path;
 }
 #endif  // OS_WIN
 
 PersistentPrefStore* ProfilePrefStoreManager::CreateProfilePrefStore(
     const scoped_refptr<base::SequencedTaskRunner>& io_task_runner,
     const base::Closure& on_reset_on_load,
-    TrackedPreferenceValidationDelegate* validation_delegate) {
+    prefs::mojom::TrackedPreferenceValidationDelegate* validation_delegate) {
   std::unique_ptr<PrefFilter> pref_filter;
   if (!kPlatformSupportsPreferenceTracking) {
     return new JsonPrefStore(profile_path_.Append(chrome::kPreferencesFilename),
                              io_task_runner.get(),
                              std::unique_ptr<PrefFilter>());
   }
 
   std::vector<PrefHashFilter::TrackedPreferenceMetadata>
       unprotected_configuration;
   std::vector<PrefHashFilter::TrackedPreferenceMetadata>
@@ skipping 104 matching lines @@
           ? base::MakeUnique<RegistryHashStoreContentsWin>(
                 *g_preference_validation_registry_path_for_testing,
                 profile_path_.BaseName().LossyDisplayName())
           : base::MakeUnique<RegistryHashStoreContentsWin>(
                 BrowserDistribution::GetDistribution()->GetRegistryPath(),
                 profile_path_.BaseName().LossyDisplayName()));
 #else
   return std::make_pair(nullptr, nullptr);
 #endif
 }