Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/ui/app_list/app_list_syncable_service.cc

Index: chrome/browser/ui/app_list/app_list_syncable_service.cc
diff --git a/chrome/browser/ui/app_list/app_list_syncable_service.cc b/chrome/browser/ui/app_list/app_list_syncable_service.cc
index c19585fdccb512e3cb80139c793f7c29fee9d0a2..bb7ce75d1b2c3f3943456b18bb9555af685fca40 100644
--- a/chrome/browser/ui/app_list/app_list_syncable_service.cc
+++ b/chrome/browser/ui/app_list/app_list_syncable_service.cc
@@ -118,7 +118,7 @@ bool IsUnRemovableDefaultApp(const std::string& id) {
 void UninstallExtension(ExtensionService* service, const std::string& id) {
   if (service && service->GetInstalledExtension(id))
     service->UninstallExtension(
-        id, ExtensionService::UNINSTALL_REASON_SYNC, NULL);
+        id, extensions::UninstalledExtensionInfo::REASON_SYNC, NULL);
 }
 
 bool GetAppListItemType(AppListItem* item,