--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/chromium/public/WebStorageNamespace.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WebStorageNamespace_h
+#define WebStorageNamespace_h
+
+#include "WebCommon.h"
+
+namespace WebKit {
+
+class WebStorageArea;
+class WebString;
+
+// WebStorageNamespace represents a collection of StorageAreas. Typically, you'll have
+// multiple StorageNamespaces to represent the SessionStorage for each tab and a single
+// StorageNamespace to represent LocalStorage for the entire browser.
+class WebStorageNamespace {
+public:
+    // Create a new WebStorageNamespace. LocalStorageNamespaces require a path to specify
+    // where the SQLite databases that make LocalStorage data persistent are located.
+    // If path is empty, data will not persist. You should call delete on the returned
+    // object when you're finished.
+    WEBKIT_API static WebStorageNamespace* createLocalStorageNamespace(const WebString& backingDirectoryPath, unsigned quota);
+    WEBKIT_API static WebStorageNamespace* createSessionStorageNamespace(unsigned quota);
+
+    // The quota for each storage area.  Suggested by the spec.
+    static const unsigned m_localStorageQuota = 5 * 1024 * 1024;
+
+    // Since SessionStorage memory is allocated in the browser process, we place a
+    // per-origin quota on it.  Like LocalStorage there are known attacks against
+    // this, so it's more of a sanity check than a real security measure.
+    static const unsigned m_sessionStorageQuota = 5 * 1024 * 1024;
+
+    static const unsigned noQuota = UINT_MAX;
+
+    virtual ~WebStorageNamespace() { }
+
+    // Create a new WebStorageArea object. Two subsequent calls with the same origin
+    // will return two different WebStorageArea objects that share the same backing store.
+    // You should call delete on the returned object when you're finished.
+    virtual WebStorageArea* createStorageArea(const WebString& origin) = 0;
+
+    // Copy a StorageNamespace. This only makes sense in the case of SessionStorage.
+    virtual WebStorageNamespace* copy() = 0;
+
+    // Shutdown the StorageNamespace. Write all StorageArea's to disk and disallow new
+    // write activity.
+    virtual void close() = 0;
+};
+
+} // namespace WebKit
+
+#endif // WebStorageNamespace_h