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diff --git a/Source/WebCore/dom/PendingScript.h b/Source/WebCore/dom/PendingScript.h
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+/*
+ * Copyright (C) 2010 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 PendingScript_h
+#define PendingScript_h
+
+#include "CachedResourceClient.h"
+#include "CachedResourceHandle.h"
+#include <wtf/text/TextPosition.h>
+#include <wtf/PassRefPtr.h>
+
+namespace WebCore {
+
+class CachedScript;
+class Element;
+
+// A container for an external script which may be loaded and executed.
+//
+// A CachedResourceHandle alone does not prevent the underlying CachedResource
+// from purging its data buffer. This class holds a dummy client open for its
+// lifetime in order to guarantee that the data buffer will not be purged.
+class PendingScript : public CachedResourceClient {
+public:
+    PendingScript()
+        : m_watchingForLoad(false)
+        , m_startingPosition(TextPosition1::belowRangePosition())
+    {
+    }
+
+    PendingScript(Element* element, CachedScript* cachedScript)
+        : m_watchingForLoad(false)
+        , m_element(element)
+    {
+        setCachedScript(cachedScript);
+    }
+
+    PendingScript(const PendingScript& other)
+        : CachedResourceClient(other)
+        , m_watchingForLoad(other.m_watchingForLoad)
+        , m_element(other.m_element)
+        , m_startingPosition(other.m_startingPosition)
+    {
+        setCachedScript(other.cachedScript());
+    }
+
+    ~PendingScript();
+
+    PendingScript& operator=(const PendingScript& other)
+    {
+        if (this == &other)
+            return *this;
+
+        m_watchingForLoad = other.m_watchingForLoad;
+        m_element = other.m_element;
+        m_startingPosition = other.m_startingPosition;
+        setCachedScript(other.cachedScript());
+
+        return *this;
+    }
+
+    TextPosition1 startingPosition() const { return m_startingPosition; }
+    void setStartingPosition(const TextPosition1& position) { m_startingPosition = position; }
+
+    bool watchingForLoad() const { return m_watchingForLoad; }
+    void setWatchingForLoad(bool b) { m_watchingForLoad = b; }
+
+    Element* element() const { return m_element.get(); }
+    void setElement(Element* element) { m_element = element; }
+    PassRefPtr<Element> releaseElementAndClear();
+
+    CachedScript* cachedScript() const;
+    void setCachedScript(CachedScript*);
+
+    virtual void notifyFinished(CachedResource*);
+
+private:
+    bool m_watchingForLoad;
+    RefPtr<Element> m_element;
+    TextPosition1 m_startingPosition; // Only used for inline script tags.
+    CachedResourceHandle<CachedScript> m_cachedScript; 
+};
+
+}
+
+#endif