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diff --git a/Source/WebKit2/UIProcess/Launcher/mac/ThreadLauncherMac.mm b/Source/WebKit2/UIProcess/Launcher/mac/ThreadLauncherMac.mm
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+++ b/Source/WebKit2/UIProcess/Launcher/mac/ThreadLauncherMac.mm
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+#include "ThreadLauncher.h"
+
+#include "RunLoop.h"
+#include "WebProcess.h"
+#include "WebSystemInterface.h"
+#include <runtime/InitializeThreading.h>
+#include <wtf/Threading.h>
+
+namespace WebKit {
+
+static void* webThreadBody(void* context)
+{
+    mach_port_t serverPort = static_cast<mach_port_t>(reinterpret_cast<uintptr_t>(context));
+
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    InitWebCoreSystemInterface();
+    JSC::initializeThreading();
+    WTF::initializeMainThread();
+
+    WebProcess::shared().initialize(serverPort, RunLoop::current());
+
+    [pool drain];
+
+    RunLoop::current()->run();
+
+    return 0;
+}
+
+CoreIPC::Connection::Identifier ThreadLauncher::createWebThread()
+{
+    // Create the service port.
+     mach_port_t listeningPort;
+     mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &listeningPort);
+     
+     // Insert a send right so we can send to it.
+     mach_port_insert_right(mach_task_self(), listeningPort, listeningPort, MACH_MSG_TYPE_MAKE_SEND);
+
+    if (!createThread(webThreadBody, reinterpret_cast<void*>(listeningPort), "WebKit2: WebThread")) {
+        mach_port_destroy(mach_task_self(), listeningPort);
+        return MACH_PORT_NULL;
+    }
+
+    return listeningPort;
+}
+
+} // namespace WebKit