Dispatch IndexedDB IPC messages to worker threads

content/renderer/renderer_webidbdatabase_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_webidbdatabase_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_webidbobjectstore_impl.h"
@@ skipping 12 matching lines @@
 
 RendererWebIDBDatabaseImpl::RendererWebIDBDatabaseImpl(int32 idb_database_id)
     : idb_database_id_(idb_database_id) {
 }
 
 RendererWebIDBDatabaseImpl::~RendererWebIDBDatabaseImpl() {
   // It's not possible for there to be pending callbacks that address this
   // object since inside WebKit, they hold a reference to the object which owns
   // this object. But, if that ever changed, then we'd need to invalidate
   // any such pointers.
-  RenderThreadImpl::current()->Send(new IndexedDBHostMsg_DatabaseDestroyed(
+  ChildThread::current()->Send(new IndexedDBHostMsg_DatabaseDestroyed(
       idb_database_id_));
 }
 
 WebString RendererWebIDBDatabaseImpl::name() const {
   string16 result;
-  RenderThreadImpl::current()->Send(
+  ChildThread::current()->Send(
       new IndexedDBHostMsg_DatabaseName(idb_database_id_, &result));
   return result;
 }
 
 WebString RendererWebIDBDatabaseImpl::version() const {
   string16 result;
-  RenderThreadImpl::current()->Send(
+  ChildThread::current()->Send(
       new IndexedDBHostMsg_DatabaseVersion(idb_database_id_, &result));
   return result;
 }
 
 WebDOMStringList RendererWebIDBDatabaseImpl::objectStoreNames() const {
   std::vector<string16> result;
-  RenderThreadImpl::current()->Send(
+  ChildThread::current()->Send(
       new IndexedDBHostMsg_DatabaseObjectStoreNames(idb_database_id_, &result));
   WebDOMStringList webResult;
   for (std::vector<string16>::const_iterator it = result.begin();
        it != result.end(); ++it) {
     webResult.append(*it);
   }
   return webResult;
 }
 
 WebKit::WebIDBObjectStore* RendererWebIDBDatabaseImpl::createObjectStore(
     const WebKit::WebString& name,
     const WebKit::WebString& key_path,
     bool auto_increment,
     const WebKit::WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
   IndexedDBHostMsg_DatabaseCreateObjectStore_Params params;
   params.name = name;
   params.key_path = key_path;
   params.auto_increment = auto_increment;
   params.transaction_id = IndexedDBDispatcher::TransactionId(transaction);
   params.idb_database_id = idb_database_id_;
 
   int object_store;
-  RenderThreadImpl::current()->Send(
+  ChildThread::current()->Send(
       new IndexedDBHostMsg_DatabaseCreateObjectStore(
           params, &object_store, &ec));
   if (!object_store)
     return NULL;
   return new RendererWebIDBObjectStoreImpl(object_store);
 }
 
 void RendererWebIDBDatabaseImpl::deleteObjectStore(
     const WebString& name,
     const WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
-  RenderThreadImpl::current()->Send(
+  ChildThread::current()->Send(
       new IndexedDBHostMsg_DatabaseDeleteObjectStore(
           idb_database_id_, name,
           IndexedDBDispatcher::TransactionId(transaction), &ec));
 }
 
 void RendererWebIDBDatabaseImpl::setVersion(
     const WebString& version,
     WebIDBCallbacks* callbacks,
     WebExceptionCode& ec) {
   IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+      ChildThread::current()->indexed_db_dispatcher();
   dispatcher->RequestIDBDatabaseSetVersion(
       version, callbacks, idb_database_id_, &ec);
 }
 
 WebKit::WebIDBTransaction* RendererWebIDBDatabaseImpl::transaction(
     const WebDOMStringList& names,
     unsigned short mode,
     WebExceptionCode& ec) {
   std::vector<string16> object_stores;
   object_stores.reserve(names.length());
   for (unsigned int i = 0; i < names.length(); ++i)
     object_stores.push_back(names.item(i));
 
   int transaction_id;
-  RenderThreadImpl::current()->Send(
+  ChildThread::current()->Send(
       new IndexedDBHostMsg_DatabaseTransaction(
           idb_database_id_, object_stores, mode,
           &transaction_id, &ec));
   if (!transaction_id)
     return NULL;
   return new RendererWebIDBTransactionImpl(transaction_id);
 }
 
 void RendererWebIDBDatabaseImpl::close() {
   IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+      ChildThread::current()->indexed_db_dispatcher();
   dispatcher->RequestIDBDatabaseClose(idb_database_id_);
 }
 
 void RendererWebIDBDatabaseImpl::open(WebIDBDatabaseCallbacks* callbacks) {
   IndexedDBDispatcher* dispatcher =
-      RenderThreadImpl::current()->indexed_db_dispatcher();
+      ChildThread::current()->indexed_db_dispatcher();
+  DCHECK(dispatcher);
   dispatcher->RequestIDBDatabaseOpen(callbacks, idb_database_id_);
 }