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diff --git a/Source/WebKit2/WebProcess/Plugins/Netscape/NPRuntimeObjectMap.h b/Source/WebKit2/WebProcess/Plugins/Netscape/NPRuntimeObjectMap.h
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+/*
+ * Copyright (C) 2010 Apple 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. AND ITS 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 APPLE INC. OR ITS 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 NPJSObjectWrapperMap_h
+#define NPJSObjectWrapperMap_h
+
+#include <wtf/Forward.h>
+#include <wtf/HashMap.h>
+
+struct NPObject;
+typedef struct _NPVariant NPVariant;
+
+namespace JSC {
+    class ExecState;
+    class JSGlobalObject;
+    class JSObject;
+    class JSValue;
+}
+
+namespace WebKit {
+
+class JSNPObject;
+class NPJSObject;
+class PluginView;
+
+// A per plug-in map of NPObjects that wrap JavaScript objects.
+class NPRuntimeObjectMap {
+public:
+    explicit NPRuntimeObjectMap(PluginView*);
+
+    class PluginProtector {
+    public:
+        explicit PluginProtector(NPRuntimeObjectMap* npRuntimeObjectMap);
+        ~PluginProtector();
+        
+    private:
+        RefPtr<PluginView> m_pluginView;
+    };
+
+    // Returns an NPObject that wraps the given JSObject object. If there is already an NPObject that wraps this JSObject, it will
+    // retain it and return it.
+    NPObject* getOrCreateNPObject(JSC::JSObject*);
+    void npJSObjectDestroyed(NPJSObject*);
+
+    // Returns a JSObject object that wraps the given NPObject.
+    JSC::JSObject* getOrCreateJSObject(JSC::JSGlobalObject*, NPObject*);
+    void jsNPObjectDestroyed(JSNPObject*);
+
+    void convertJSValueToNPVariant(JSC::ExecState*, JSC::JSValue, NPVariant&);
+    JSC::JSValue convertNPVariantToJSValue(JSC::ExecState*, JSC::JSGlobalObject*, const NPVariant&);
+
+    bool evaluate(NPObject*, const String& scriptString, NPVariant* result);
+
+    // Called when the plug-in is destroyed. Will invalidate all the NPObjects.
+    void invalidate();
+
+    JSC::JSGlobalObject* globalObject() const;
+    JSC::ExecState* globalExec() const;
+
+    static void setGlobalException(const String& exceptionString);
+    static void moveGlobalExceptionToExecState(JSC::ExecState*);
+
+private:
+    PluginView* m_pluginView;
+
+    HashMap<JSC::JSObject*, NPJSObject*> m_npJSObjects;
+    HashMap<NPObject*, JSNPObject*> m_jsNPObjects;
+};
+
+} // namespace WebKit
+
+#endif // NPJSObjectWrapperMap_h