sync: Implementation of Priority Preferences.

chrome/browser/prefs/pref_service_syncable.cc

Index: chrome/browser/prefs/pref_service_syncable.cc
diff --git a/chrome/browser/prefs/pref_service_syncable.cc b/chrome/browser/prefs/pref_service_syncable.cc
index 01db256afaf392f7ff2c12525001f42a724d8a84..bcb3518085ec75b07334e9451be6ac9b39b2c7ce 100644
--- a/chrome/browser/prefs/pref_service_syncable.cc
+++ b/chrome/browser/prefs/pref_service_syncable.cc
@@ -43,21 +43,28 @@ PrefServiceSyncable::PrefServiceSyncable(
                 user_prefs,
                 pref_registry,
                 read_error_callback,
-                async) {
+                async),
+    pref_sync_associator_(syncer::PREFERENCES),
+    priority_pref_sync_associator_(syncer::PRIORITY_PREFERENCES) {
   pref_sync_associator_.SetPrefService(this);
+  priority_pref_sync_associator_.SetPrefService(this);
 
   // Let PrefModelAssociator know about changes to preference values.
   pref_value_store->set_callback(
       base::Bind(&PrefModelAssociator::ProcessPrefChange,
                  base::Unretained(&pref_sync_associator_)));
+  pref_value_store->set_callback(
+      base::Bind(&PrefModelAssociator::ProcessPrefChange,
+                 base::Unretained(&priority_pref_sync_associator_)));
 
   // Add already-registered syncable preferences to PrefModelAssociator.
-  const std::set<std::string>& syncable_preferences =
+  const PrefRegistrySyncable::PrefToStatus& syncable_preferences =
       pref_registry->syncable_preferences();
-  for (std::set<std::string>::const_iterator it = syncable_preferences.begin();
+  for (PrefRegistrySyncable::PrefToStatus::const_iterator it =
+           syncable_preferences.begin();
        it != syncable_preferences.end();
        ++it) {
-    AddRegisteredSyncablePreference(it->c_str());
+    AddRegisteredSyncablePreference(it->first.c_str(), it->second);
   }
 
   // Watch for syncable preferences registered after this point.
@@ -115,8 +122,16 @@ void PrefServiceSyncable::RemoveObserver(
   observer_list_.RemoveObserver(observer);
 }
 
-syncer::SyncableService* PrefServiceSyncable::GetSyncableService() {
-  return &pref_sync_associator_;
+syncer::SyncableService* PrefServiceSyncable::GetSyncableService(
+    const syncer::ModelType& type) {
+  if (type == syncer::PREFERENCES) {
+    return &pref_sync_associator_;
+  } else if (type == syncer::PRIORITY_PREFERENCES) {
+    return &priority_pref_sync_associator_;
+  } else {
+    NOTREACHED() << "invalid model type: " << type;
+    return NULL;
+  }
 }
 
 void PrefServiceSyncable::UpdateCommandLinePrefStore(
@@ -127,12 +142,24 @@ void PrefServiceSyncable::UpdateCommandLinePrefStore(
   PrefService::UpdateCommandLinePrefStore(cmd_line_store);
 }
 
-void PrefServiceSyncable::AddRegisteredSyncablePreference(const char* path) {
+void PrefServiceSyncable::AddRegisteredSyncablePreference(
+    const char* path, const PrefRegistrySyncable::PrefSyncStatus sync_status) {
   DCHECK(FindPreference(path));
-  pref_sync_associator_.RegisterPref(path);
+  if (sync_status == PrefRegistrySyncable::SYNCABLE_PREF) {
+    pref_sync_associator_.RegisterPref(path);
+  } else if (sync_status == PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF) {
+    priority_pref_sync_associator_.RegisterPref(path);
+  } else {
+    NOTREACHED() << "invalid sync_status: " << sync_status;
+  }
 }
 
 void PrefServiceSyncable::OnIsSyncingChanged() {
   FOR_EACH_OBSERVER(PrefServiceSyncableObserver, observer_list_,
                     OnIsSyncingChanged());
 }
+
+void PrefServiceSyncable::ProcessPrefChange(const std::string& name) {
+  pref_sync_associator_.ProcessPrefChange(name);
+  priority_pref_sync_associator_.ProcessPrefChange(name);
+}