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diff --git a/Source/WebKit2/WebProcess/Plugins/PluginProcessConnection.h b/Source/WebKit2/WebProcess/Plugins/PluginProcessConnection.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 PluginProcessConnection_h
+#define PluginProcessConnection_h
+
+#if ENABLE(PLUGIN_PROCESS)
+
+#include "Connection.h"
+#include "Plugin.h"
+#include <wtf/RefCounted.h>
+#include <wtf/text/WTFString.h>
+
+// A CoreIPC connection to a plug-in process.
+
+namespace WebKit {
+
+class NPRemoteObjectMap;
+class PluginProcessConnectionManager;
+class PluginProxy;
+    
+class PluginProcessConnection : public RefCounted<PluginProcessConnection>, CoreIPC::Connection::Client {
+public:
+    static PassRefPtr<PluginProcessConnection> create(PluginProcessConnectionManager* pluginProcessConnectionManager, const String& pluginPath, CoreIPC::Connection::Identifier connectionIdentifier)
+    {
+        return adoptRef(new PluginProcessConnection(pluginProcessConnectionManager, pluginPath, connectionIdentifier));
+    }
+    ~PluginProcessConnection();
+
+    const String& pluginPath() const { return m_pluginPath; }
+
+    CoreIPC::Connection* connection() const { return m_connection.get(); }
+
+    void addPluginProxy(PluginProxy*);
+    void removePluginProxy(PluginProxy*);
+
+    NPRemoteObjectMap* npRemoteObjectMap() const { return m_npRemoteObjectMap.get(); }
+
+private:
+    PluginProcessConnection(PluginProcessConnectionManager* pluginProcessConnectionManager, const String& pluginPath, CoreIPC::Connection::Identifier connectionIdentifier);
+
+    // CoreIPC::Connection::Client
+    virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
+    virtual CoreIPC::SyncReplyMode didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, CoreIPC::ArgumentEncoder*);
+    virtual void didClose(CoreIPC::Connection*);
+    virtual void didReceiveInvalidMessage(CoreIPC::Connection*, CoreIPC::MessageID);
+    
+    PluginProcessConnectionManager* m_pluginProcessConnectionManager;
+    String m_pluginPath;
+
+    // The connection from the web process to the plug-in process.
+    RefPtr<CoreIPC::Connection> m_connection;
+
+    // The plug-ins. We use a weak reference to the plug-in proxies because the plug-in view holds the strong reference.
+    HashMap<uint64_t, PluginProxy*> m_plugins;
+
+    RefPtr<NPRemoteObjectMap> m_npRemoteObjectMap;
+};
+
+} // namespace WebKit
+
+#endif // ENABLE(PLUGIN_PROCESS)
+
+#endif // PluginProcessConnection_h