Don't crash when trying to create an ExtensionSyncData from invalid SyncData.

chrome/browser/extensions/app_sync_bundle.cc

Index: chrome/browser/extensions/app_sync_bundle.cc
diff --git a/chrome/browser/extensions/app_sync_bundle.cc b/chrome/browser/extensions/app_sync_bundle.cc
index 69a5db6c656b120274af25b1170fd2f5c73afb53..c50f2c9aa7361b503735c8954024a6ae07080af5 100644
--- a/chrome/browser/extensions/app_sync_bundle.cc
+++ b/chrome/browser/extensions/app_sync_bundle.cc
@@ -33,9 +33,11 @@ void AppSyncBundle::SetupSync(
   for (syncer::SyncDataList::const_iterator i = initial_sync_data.begin();
        i != initial_sync_data.end();
        ++i) {
-    AppSyncData app_sync_data(*i);
-    AddApp(app_sync_data.id());
-    extension_sync_service_->ProcessAppSyncData(app_sync_data);
+    scoped_ptr<AppSyncData> app_sync_data(AppSyncData::CreateFromSyncData(*i));
+    if (app_sync_data.get()) {
+      AddApp(app_sync_data->id());
+      extension_sync_service_->ProcessAppSyncData(*app_sync_data);
+    }
   }
 }