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diff --git a/WebCore/dom/ScriptableDocumentParser.h b/WebCore/dom/ScriptableDocumentParser.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 ScriptableDocumentParser_h
+#define ScriptableDocumentParser_h
+
+#include "DecodedDataDocumentParser.h"
+
+namespace WebCore {
+
+class SegmentedString;
+class XSSAuditor;
+
+class ScriptableDocumentParser : public DecodedDataDocumentParser {
+public:
+    // Only used by Document::open for deciding if its safe to act on a
+    // JavaScript document.open() call right now, or it should be ignored.
+    virtual bool isExecutingScript() const { return false; }
+
+    // FIXME: Only the HTMLDocumentParser ever blocks script execution on
+    // stylesheet load, which is likely a bug in the XMLDocumentParser.
+    virtual void executeScriptsWaitingForStylesheets() { }
+
+    virtual bool isWaitingForScripts() const = 0;
+
+    // These are used to expose the current line/column to the scripting system.
+    virtual int lineNumber() const = 0;
+    virtual int columnNumber() const = 0;
+
+    XSSAuditor* xssAuditor() const { return m_xssAuditor; }
+    void setXSSAuditor(XSSAuditor* auditor) { m_xssAuditor = auditor; }
+
+    // Exposed for LegacyHTMLTreeBuilder::reportErrorToConsole
+    virtual bool processingContentWrittenByScript() const { return false; }
+
+protected:
+    ScriptableDocumentParser(Document*, bool viewSourceMode = false);
+
+private:
+    virtual ScriptableDocumentParser* asScriptableDocumentParser() { return this; }
+
+    // The XSSAuditor associated with this document parser.
+    XSSAuditor* m_xssAuditor;
+};
+
+}
+
+#endif // ScriptableDocumentParser_h