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diff --git a/Source/WebKit/chromium/public/WebStorageArea.h b/Source/WebKit/chromium/public/WebStorageArea.h
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+/*
+ * 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 WebStorageArea_h
+#define WebStorageArea_h
+
+#include "WebCommon.h"
+#include "WebString.h"
+
+namespace WebKit {
+
+class WebFrame;
+class WebURL;
+
+// In WebCore, there's one distinct StorageArea per origin per StorageNamespace. This
+// class wraps a StorageArea.  All the methods have obvious connections to the spec:
+// http://dev.w3.org/html5/webstorage/
+class WebStorageArea {
+public:
+    virtual ~WebStorageArea() { }
+
+    enum Result {
+        ResultOK = 0,
+        ResultBlockedByQuota,
+        ResultBlockedByPolicy
+    };
+
+    // The number of key/value pairs in the storage area.
+    virtual unsigned length() = 0;
+
+    // Get a value for a specific key. Valid key indices are 0 through length() - 1.
+    // Indexes may change on any set/removeItem call. Will return null if the index
+    // provided is out of range.
+    virtual WebString key(unsigned index) = 0;
+
+    // Get the value that corresponds to a specific key. This returns null if there is
+    // no entry for that key.
+    virtual WebString getItem(const WebString& key) = 0;
+
+    // Set the value that corresponds to a specific key. Result will either be ResultOK
+    // or some particular error. The value is NOT set when there's an error.  url is the
+    // url that should be used if a storage event fires.
+    virtual void setItem(const WebString& key, const WebString& newValue, const WebURL& url, Result& result, WebString& oldValue, WebFrame*)
+    {
+        setItem(key, newValue, url, result, oldValue);
+    }
+    // FIXME: Remove soon (once Chrome has rolled past this revision).
+    virtual void setItem(const WebString& key, const WebString& newValue, const WebURL& url, Result& result, WebString& oldValue)
+    {
+        setItem(key, newValue, url, result, oldValue, 0);
+    }
+
+    // Remove the value associated with a particular key.  url is the url that should be used
+    // if a storage event fires.
+    virtual void removeItem(const WebString& key, const WebURL& url, WebString& oldValue) = 0;
+
+    // Clear all key/value pairs.  url is the url that should be used if a storage event fires.
+    virtual void clear(const WebURL& url, bool& somethingCleared) = 0;
+};
+
+} // namespace WebKit
+
+#endif // WebStorageArea_h