indexeddb: make setVersion fire blocked event if other connections are open

chrome/browser/in_process_webkit/indexed_db_callbacks.cc

Index: chrome/browser/in_process_webkit/indexed_db_callbacks.cc
diff --git a/chrome/browser/in_process_webkit/indexed_db_callbacks.cc b/chrome/browser/in_process_webkit/indexed_db_callbacks.cc
index 395919db75dabb8ca0546f8a8d1b066849f52f76..c4584c6a5dd6de67f20be3ddb5fae4f08997141f 100644
--- a/chrome/browser/in_process_webkit/indexed_db_callbacks.cc
+++ b/chrome/browser/in_process_webkit/indexed_db_callbacks.cc
@@ -29,6 +29,10 @@ void IndexedDBCallbacksBase::onError(const WebKit::WebIDBDatabaseError& error) {
       response_id_, error.code(), error.message()));
 }
 
+void IndexedDBCallbacksBase::onBlocked() {
+  dispatcher_host_->Send(new IndexedDBMsg_CallbacksBlocked(response_id_));
+}
+
 void IndexedDBTransactionCallbacks::onAbort() {
   dispatcher_host_->Send(
       new IndexedDBMsg_TransactionCallbacksAbort(transaction_id_));