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

chrome/browser/in_process_webkit/indexed_db_callbacks.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/in_process_webkit/indexed_db_callbacks.h"
 
 #include "chrome/common/indexed_db_messages.h"
 
 IndexedDBCallbacksBase::IndexedDBCallbacksBase(
     IndexedDBDispatcherHost* dispatcher_host,
@@ skipping 11 matching lines @@
       transaction_id_(transaction_id) {
 }
 
 IndexedDBTransactionCallbacks::~IndexedDBTransactionCallbacks() {}
 
 void IndexedDBCallbacksBase::onError(const WebKit::WebIDBDatabaseError& error) {
   dispatcher_host_->Send(new IndexedDBMsg_CallbacksError(
       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_));
 }
 
 void IndexedDBTransactionCallbacks::onComplete() {
   dispatcher_host_->Send(
       new IndexedDBMsg_TransactionCallbacksComplete(transaction_id_));
 }
 
@@ skipping 22 matching lines @@
       new IndexedDBMsg_CallbacksSuccessIndexedDBKey(
           response_id(), IndexedDBKey(value)));
 }
 
 void IndexedDBCallbacks<WebKit::WebSerializedScriptValue>::onSuccess(
     const WebKit::WebSerializedScriptValue& value) {
   dispatcher_host()->Send(
       new IndexedDBMsg_CallbacksSuccessSerializedScriptValue(
           response_id(), SerializedScriptValue(value)));
 }