Fix cause of uninitialized memory read in ExtensionService unit_tests

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 56cf5249c2654faef4ac1f74bc44ab9f13c3bd4c..402e0e40a4707dc48ff6cdee14a0fa76126feb12 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -1444,7 +1444,8 @@ void ExtensionService::ProcessExtensionSyncData(
       bundle.pending_sync_data[extension_sync_data.id()] = extension_sync_data;
       CheckForUpdatesSoon();
     }
-    if (extension_sync_data.notifications_disabled() !=
+    if (extension_sync_data.type() == Extension::SYNC_TYPE_APP &&
+        extension_sync_data.notifications_disabled() !=
         extension_prefs_->IsAppNotificationDisabled(id)) {
       extension_prefs_->SetAppNotificationDisabled(
           id, extension_sync_data.notifications_disabled());