Integrate the new DomStorage backend into DRT and test_shell.

webkit/tools/test_shell/simple_dom_storage_system.h

+// 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.
+
+#ifndef WEBKIT_TOOLS_TEST_SHELL_SIMPLE_DOM_STORAGE_SYSTEM_H_
+#define WEBKIT_TOOLS_TEST_SHELL_SIMPLE_DOM_STORAGE_SYSTEM_H_
+#pragma once
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "webkit/dom_storage/dom_storage_context.h"
+#include "webkit/dom_storage/dom_storage_host.h"
+#include "webkit/dom_storage/dom_storage_types.h"  // For the ENABLE flag.
+
+namespace dom_storage {
+class DomStorageContext;
+class DomStorageHost;
+}
+namespace WebKit {
+class WebStorageNamespace;
+}
+
+// Class that composes dom_storage classes together for use
+// in simple single process environments like test_shell and DRT.
+class SimpleDomStorageSystem {
+ public:
+  static SimpleDomStorageSystem& instance() { return *g_instance_; }
+
+  SimpleDomStorageSystem();
+  ~SimpleDomStorageSystem();
+
+  // The Create<<>> calls are bound to WebKit api that the embedder
+  // is responsible for implementing. These factories are called strictly
+  // on the 'main' webkit thread. Ditto the methods on the returned
+  // objects. SimplDomStorageSystem manufactures implementations of the
+  // WebStorageNamespace and WebStorageArea interfaces that ultimately
+  // plumb Get, Set, Remove, and Clear javascript calls to the dom_storage
+  // classes. The caller (webkit/webcore) takes ownership of the returned
+  // instances and will delete them when done.
+  WebKit::WebStorageNamespace* CreateLocalStorageNamespace();
+  WebKit::WebStorageNamespace* CreateSessionStorageNamespace();
+
+ private:
+  // Inner classes that implement the WebKit WebStorageNamespace and
+  // WebStorageArea interfaces in terms of dom_storage classes.
+  class NamespaceImpl;
+  class AreaImpl;
+
+  base::WeakPtrFactory<SimpleDomStorageSystem> weak_factory_;
+  scoped_refptr<dom_storage::DomStorageContext> context_;
+  scoped_ptr<dom_storage::DomStorageHost> host_;
+
+  static SimpleDomStorageSystem* g_instance_;
+};
+
+#endif  // WEBKIT_TOOLS_TEST_SHELL_SIMPLE_DOM_STORAGE_SYSTEM_H_