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diff --git a/WebKit/chromium/public/WebSharedWorker.h b/WebKit/chromium/public/WebSharedWorker.h
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+++ b/WebKit/chromium/public/WebSharedWorker.h
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+/*
+ * Copyright (C) 2009 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 WebSharedWorker_h
+#define WebSharedWorker_h
+
+#include "WebCommon.h"
+
+namespace WebCore {
+class ScriptExecutionContext;
+}
+
+namespace WebKit {
+
+class WebString;
+class WebMessagePortChannel;
+class WebCommonWorkerClient;
+class WebURL;
+
+// This is the interface to a SharedWorker thread.
+// Since SharedWorkers communicate entirely through MessagePorts this interface only contains APIs for starting up a SharedWorker.
+class WebSharedWorker {
+public:
+    // Invoked from the worker thread to instantiate a WebSharedWorker that interacts with the WebKit worker components.
+    WEBKIT_API static WebSharedWorker* create(WebCommonWorkerClient*);
+
+    virtual ~WebSharedWorker() {};
+
+    // Returns false if the thread hasn't been started yet (script loading has not taken place).
+    // FIXME(atwilson): Remove this when we move the initial script loading into the worker process.
+    virtual bool isStarted() = 0;
+
+    virtual void startWorkerContext(const WebURL& scriptURL,
+                                    const WebString& name,
+                                    const WebString& userAgent,
+                                    const WebString& sourceCode) = 0;
+    class ConnectListener {
+    public:
+        // Invoked once the connect event has been sent so the caller can free this object.
+        virtual void connected() = 0;
+    };
+
+    // Sends a connect event to the SharedWorker context. The listener is invoked when this async operation completes.
+    virtual void connect(WebMessagePortChannel*, ConnectListener*) = 0;
+
+    // Invoked to shutdown the worker when there are no more associated documents.
+    virtual void terminateWorkerContext() = 0;
+
+    // Notification when the WebCommonWorkerClient is destroyed.
+    virtual void clientDestroyed() = 0;
+};
+
+} // namespace WebKit
+
+#endif