Dispatch IndexedDB IPC messages to worker threads

content/renderer/renderer_webidbindex_impl.cc

 // Copyright (c) 2011 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 "content/renderer/renderer_webidbindex_impl.h"
 
 #include "content/common/indexed_db_messages.h"
 #include "content/renderer/indexed_db_dispatcher.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/renderer_webidbtransaction_impl.h"
@@ skipping 45 matching lines @@
       new IndexedDBHostMsg_IndexUnique(idb_index_id_, &result));
   return result;
 }
 
 void RendererWebIDBIndexImpl::openObjectCursor(
     const WebKit::WebIDBKeyRange& range,
     unsigned short direction,
     WebKit::WebIDBCallbacks* callbacks,
     const WebKit::WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
-  IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+  IndexedDBDispatcher* dispatcher = IndexedDBDispatcher::Instance();
   dispatcher->RequestIDBIndexOpenObjectCursor(
       range, direction, callbacks,  idb_index_id_, transaction, &ec);
 }
 
 void RendererWebIDBIndexImpl::openKeyCursor(
     const WebKit::WebIDBKeyRange& range,
     unsigned short direction,
     WebKit::WebIDBCallbacks* callbacks,
     const WebKit::WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
-  IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+  IndexedDBDispatcher* dispatcher = IndexedDBDispatcher::Instance();
   dispatcher->RequestIDBIndexOpenKeyCursor(
       range, direction, callbacks,  idb_index_id_, transaction, &ec);
 }
 
 void RendererWebIDBIndexImpl::getObject(
     const WebKit::WebIDBKey& key,
     WebKit::WebIDBCallbacks* callbacks,
     const WebKit::WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
-  IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+  IndexedDBDispatcher* dispatcher = IndexedDBDispatcher::Instance();
   dispatcher->RequestIDBIndexGetObject(
       IndexedDBKey(key), callbacks, idb_index_id_, transaction, &ec);
 }
 
 void RendererWebIDBIndexImpl::getKey(
     const WebKit::WebIDBKey& key,
     WebKit::WebIDBCallbacks* callbacks,
     const WebKit::WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
-  IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+  IndexedDBDispatcher* dispatcher = IndexedDBDispatcher::Instance();
   dispatcher->RequestIDBIndexGetKey(
       IndexedDBKey(key), callbacks, idb_index_id_, transaction, &ec);
 }