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diff --git a/Source/WebKit2/PluginProcess/PluginProcess.h b/Source/WebKit2/PluginProcess/PluginProcess.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 PluginProcess_h
+#define PluginProcess_h
+
+#if ENABLE(PLUGIN_PROCESS)
+
+#include "ChildProcess.h"
+#include "RunLoop.h"
+#include <wtf/Forward.h>
+#include <wtf/text/WTFString.h>
+
+namespace WebKit {
+
+class NetscapePluginModule;
+class WebProcessConnection;
+struct PluginProcessCreationParameters;
+        
+class PluginProcess : ChildProcess {
+public:
+    static PluginProcess& shared();
+
+    void initializeConnection(CoreIPC::Connection::Identifier);
+    void removeWebProcessConnection(WebProcessConnection* webProcessConnection);
+
+    NetscapePluginModule* netscapePluginModule();
+
+#if PLATFORM(MAC)
+    void initializeShim();
+
+#if USE(ACCELERATED_COMPOSITING)
+    mach_port_t compositingRenderServerPort() const { return m_compositingRenderServerPort; }
+#endif
+#endif
+
+private:
+    PluginProcess();
+    ~PluginProcess();
+
+    // CoreIPC::Connection::Client
+    virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
+    virtual void didClose(CoreIPC::Connection*);
+    virtual void didReceiveInvalidMessage(CoreIPC::Connection*, CoreIPC::MessageID);
+
+    // Message handlers.
+    void didReceivePluginProcessMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
+    void initialize(const PluginProcessCreationParameters&);
+    void createWebProcessConnection();
+    
+    void shutdownTimerFired();
+
+    // The connection to the UI process.
+    RefPtr<CoreIPC::Connection> m_connection;
+
+    // Our web process connections.
+    Vector<RefPtr<WebProcessConnection> > m_webProcessConnections;
+
+    // The plug-in path.
+    String m_pluginPath;
+
+    // The plug-in module.
+    RefPtr<NetscapePluginModule> m_pluginModule;
+    
+    // A timer used for the shutdown timeout.
+    RunLoop::Timer<PluginProcess> m_shutdownTimer;
+
+#if USE(ACCELERATED_COMPOSITING) && PLATFORM(MAC)
+    // The Mach port used for accelerated compositing.
+    mach_port_t m_compositingRenderServerPort;
+#endif
+    
+};
+
+} // namespace WebKit
+
+#endif // ENABLE(PLUGIN_PROCESS)
+
+#endif // PluginProcess_h