sync: Buffer Protocol Events for about:sync page

sync/internal_api/test/fake_sync_manager.cc

Index: sync/internal_api/test/fake_sync_manager.cc
diff --git a/sync/internal_api/test/fake_sync_manager.cc b/sync/internal_api/test/fake_sync_manager.cc
index 883da74972a491c8ebd4b38b214eee16b0bf14af..3fdbefad7f9bf5e1298c7270f1ac18bfc95e9025 100644
--- a/sync/internal_api/test/fake_sync_manager.cc
+++ b/sync/internal_api/test/fake_sync_manager.cc
@@ -239,6 +239,11 @@ SyncEncryptionHandler* FakeSyncManager::GetEncryptionHandler() {
   return fake_encryption_handler_.get();
 }
 
+ScopedVector<syncer::ProtocolEvent>
+FakeSyncManager::GetBufferedProtocolEvents() {
+  return ScopedVector<syncer::ProtocolEvent>();
+}
+
 void FakeSyncManager::RefreshTypes(ModelTypeSet types) {
   last_refresh_request_types_ = types;
 }