DOM Storage: Add renderer-process IPC code.

chrome/renderer/renderer_webstoragenamespace_impl.h

+// Copyright (c) 2009 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 CHROME_RENDERER_RENDERER_WEBSTORAGENAMESPACE_IMPL_H_
+#define CHROME_RENDERER_RENDERER_WEBSTORAGENAMESPACE_IMPL_H_
+
+#include "base/basictypes.h"
+#include "webkit/api/public/WebStorageNamespace.h"
+
+class RendererWebStorageNamespaceImpl : public WebKit::WebStorageNamespace {
+ public:
+  explicit RendererWebStorageNamespaceImpl(bool is_local_storage);
+  RendererWebStorageNamespaceImpl(bool is_local_storage, int64 namespace_id);
+
+  // See WebStorageNamespace.h for documentation on these functions.
+  virtual ~RendererWebStorageNamespaceImpl();
+  virtual WebKit::WebStorageArea* createStorageArea(
+      const WebKit::WebString& origin);
+  virtual WebKit::WebStorageNamespace* copy();
+  virtual void close();
+
+ private:
+  // Are we local storage (as opposed to session storage).  Used during lazy
+  // initialization of namespace_id_.
+  bool is_local_storage_;
+
+  // Our namespace ID.  Lazily initialized.
+  int64 namespace_id_;
+
+  // namespace_id_ should equal this iff its unitialized.
+  static const int64 kUninitializedNamespaceId = -1;
+};
+
+#endif  // CHROME_RENDERER_WEBSTORAGENAMESPACE_IMPL_H_