Integrate registry_hash_store_contents with the rest of tracked prefs.

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 90 matching lines @@
     if (it->enforcement_level > PrefHashFilter::NO_ENFORCEMENT) {
       protected_configuration.push_back(*it);
       protected_pref_names.insert(it->name);
     } else {
       unprotected_configuration.push_back(*it);
       unprotected_pref_names.insert(it->name);
     }
   }
 
   std::unique_ptr<PrefHashFilter> unprotected_pref_hash_filter(
-      new PrefHashFilter(GetPrefHashStore(false), unprotected_configuration,
-                         base::Closure(), validation_delegate,
-                         reporting_ids_count_, false));
+      new PrefHashFilter(
+          GetPrefHashStore(false), MaybeGetRegistryPrefHashStore(),
+          unprotected_configuration, profile_path_, base::Closure(),
+          validation_delegate, reporting_ids_count_, false));
   std::unique_ptr<PrefHashFilter> protected_pref_hash_filter(new PrefHashFilter(
-      GetPrefHashStore(true), protected_configuration, on_reset_on_load,
+      GetPrefHashStore(true), MaybeGetRegistryPrefHashStore(),
+      protected_configuration, profile_path_, on_reset_on_load,
       validation_delegate, reporting_ids_count_, true));
 
   PrefHashFilter* raw_unprotected_pref_hash_filter =
       unprotected_pref_hash_filter.get();
   PrefHashFilter* raw_protected_pref_hash_filter =
       protected_pref_hash_filter.get();
 
   scoped_refptr<JsonPrefStore> unprotected_pref_store(new JsonPrefStore(
       profile_path_.Append(chrome::kPreferencesFilename), io_task_runner.get(),
       std::move(unprotected_pref_hash_filter)));
@@ skipping 25 matching lines @@
   // first run).
   if (!base::CreateDirectory(profile_path_))
     return false;
 
   const base::DictionaryValue* to_serialize = &master_prefs;
   std::unique_ptr<base::DictionaryValue> copy;
 
   if (kPlatformSupportsPreferenceTracking) {
     copy.reset(master_prefs.DeepCopy());
     to_serialize = copy.get();
-    PrefHashFilter(GetPrefHashStore(false),
-                   tracking_configuration_,
-                   base::Closure(),
-                   NULL,
-                   reporting_ids_count_,
-                   false).Initialize(copy.get());
+    PrefHashFilter(GetPrefHashStore(false), MaybeGetRegistryPrefHashStore(),
+                   tracking_configuration_, profile_path_, base::Closure(),
+                   NULL, reporting_ids_count_, false)
+        .Initialize(copy.get());
   }
 
   // This will write out to a single combined file which will be immediately
   // migrated to two files on load.
   JSONFileValueSerializer serializer(
       profile_path_.Append(chrome::kPreferencesFilename));
 
   // Call Serialize (which does IO) on the main thread, which would _normally_
   // be verboten. In this case however, we require this IO to synchronously
   // complete before Chrome can start (as master preferences seed the Local
   // State and Preferences files). This won't trip ThreadIORestrictions as they
   // won't have kicked in yet on the main thread.
   bool success = serializer.Serialize(*to_serialize);
 
   UMA_HISTOGRAM_BOOLEAN("Settings.InitializedFromMasterPrefs", success);
   return success;
 }
 
 std::unique_ptr<PrefHashStore> ProfilePrefStoreManager::GetPrefHashStore(
     bool use_super_mac) {
   DCHECK(kPlatformSupportsPreferenceTracking);
 
   return std::unique_ptr<PrefHashStore>(
       new PrefHashStoreImpl(seed_, device_id_, use_super_mac));
 }
+
+std::unique_ptr<PrefHashStore>
+ProfilePrefStoreManager::MaybeGetRegistryPrefHashStore() {
+  DCHECK(kPlatformSupportsPreferenceTracking);
+#if defined(OS_WIN)
+  return std::unique_ptr<PrefHashStore>(
+      new PrefHashStoreImpl("ChromiumRegistryHashStoreValidationSeed",
+                            device_id_, false /* use_super_mac */));
+#else
+  return nullptr;
+#endif
+}