Get IPC working for Indexed DB in shared workers.

content/worker/worker_webkitplatformsupport_impl.cc

Index: content/worker/worker_webkitplatformsupport_impl.cc
diff --git a/content/worker/worker_webkitplatformsupport_impl.cc b/content/worker/worker_webkitplatformsupport_impl.cc
index d37621a600c2ee529fa4565f7afc3c2129a73683..d544d4bc50a1d7735143bdebeda508decb7862c1 100644
--- a/content/worker/worker_webkitplatformsupport_impl.cc
+++ b/content/worker/worker_webkitplatformsupport_impl.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -9,6 +9,7 @@
 #include "content/common/database_util.h"
 #include "content/common/file_system/webfilesystem_impl.h"
 #include "content/common/file_utilities_messages.h"
+#include "content/common/indexed_db/proxy_webidbfactory_impl.h"
 #include "content/common/mime_registry_messages.h"
 #include "content/common/webblobregistry_impl.h"
 #include "content/common/webmessageportchannel_impl.h"
@@ -208,6 +209,12 @@ long long WorkerWebKitPlatformSupportImpl::databaseGetSpaceAvailableForOrigin(
   return DatabaseUtil::DatabaseGetSpaceAvailable(origin_identifier);
 }
 
+WebKit::WebIDBFactory* WorkerWebKitPlatformSupportImpl::idbFactory() {
+  if (!web_idb_factory_.get())
+    web_idb_factory_.reset(new RendererWebIDBFactoryImpl());

[jsbell, 2012/02/15 16:44:31]

This will only ever be called on the worker thread, right? (I see this pattern
used below, so I assume it's safe)

I notice the WebBlobRegistry API below passes the worker thread into the
constructor. As a future item perhaps we want the ProxyWebIDBFactoryImpl to
take/store its "home" thread and DCHECK that its methods are always called from
that thread?

+  return web_idb_factory_.get();
+}
+
 WebMimeRegistry::SupportsType
 WorkerWebKitPlatformSupportImpl::supportsMIMEType(
     const WebString&) {