sync: Implementation of Priority Preferences.

components/user_prefs/pref_registry_syncable.cc

 // 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.
 
 #include "components/user_prefs/pref_registry_syncable.h"
 
 #include "base/files/file_path.h"
 #include "base/prefs/default_pref_store.h"
 #include "base/string_number_conversions.h"
 #include "base/values.h"
@@ skipping 44 matching lines @@
 }
 
 }  // namespace
 
 PrefRegistrySyncable::PrefRegistrySyncable() {
 }
 
 PrefRegistrySyncable::~PrefRegistrySyncable() {
 }
 
-const std::set<std::string>&
+const PrefRegistrySyncable::PrefToStatus&
 PrefRegistrySyncable::syncable_preferences() const {
   return syncable_preferences_;
 }
 
 void PrefRegistrySyncable::SetSyncableRegistrationCallback(
     const SyncableRegistrationCallback& cb) {
   callback_ = cb;
 }
 
 void PrefRegistrySyncable::RegisterBooleanPref(const char* path,
@@ skipping 119 matching lines @@
       Value::CreateStringValue(base::Uint64ToString(default_value)),
       sync_status);
 }
 
 void PrefRegistrySyncable::RegisterSyncablePreference(
     const char* path,
     base::Value* default_value,
     PrefSyncStatus sync_status) {
   PrefRegistry::RegisterPreference(path, default_value);
 
-  if (sync_status == SYNCABLE_PREF) {
-    syncable_preferences_.insert(path);
+  if (sync_status == PrefRegistrySyncable::SYNCABLE_PREF ||
+      sync_status == PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF) {
+    syncable_preferences_[path] = sync_status;
 
     if (!callback_.is_null())
-      callback_.Run(path);
+      callback_.Run(path, sync_status);
   }
 }
 
 scoped_refptr<PrefRegistrySyncable> PrefRegistrySyncable::ForkForIncognito() {
   // TODO(joi): We can directly reuse the same PrefRegistry once
   // PrefService no longer registers for callbacks on registration and
   // unregistration.
   scoped_refptr<PrefRegistrySyncable> registry(new PrefRegistrySyncable());
   registry->defaults_ = defaults_;
   return registry;
 }