Initial checkin of the out of process worker implementation....

chrome/renderer/webworker_proxy.h

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_RENDERER_WEBWORKER_PROXY_H_
+#define CHROME_RENDERER_WEBWORKER_PROXY_H_
+
+#include "base/basictypes.h"
+#include "chrome/common/ipc_channel.h"
+#include "webkit/glue/webworker.h"
+
+class GURL;
+class RenderView;
+
+namespace IPC {
+class Message;
+}
+
+// This class provides an implementation of WebWorker that the renderer provides
+// to the glue.  This class converts function calls to IPC messages that are 
+// dispatched in the worker process by WebWorkerClientProxy.  It also receives
+// IPC messages from WebWorkerClientProxy which it converts to function calls to
+// WebWorkerClient.
+class WebWorkerProxy : public WebWorker,
+                       public IPC::Channel::Listener {
+ public:
+  WebWorkerProxy(IPC::Message::Sender* sender, WebWorkerClient* client);
+  virtual ~WebWorkerProxy();
+
+  // WebWorker implementation.
+  // These functions are called by WebKit (after the data types have been
+  // converted by glue code).
+  virtual void StartWorkerContext(const GURL& script_url,
+                                  const string16& user_agent,
+                                  const string16& source_code);
+  virtual void TerminateWorkerContext();
+  virtual void PostMessageToWorkerContext(const string16& message);
+  virtual void WorkerObjectDestroyed();
+
+  // IPC::Channel::Listener implementation.
+  void OnMessageReceived(const IPC::Message& message);
+
+ private:
+  bool Send(IPC::Message* message);
+
+  IPC::Message::Sender* sender_;
+  int route_id_;
+
+  // Used to communicate to the WebCore::Worker object in response to IPC
+  // messages.
+  WebWorkerClient* client_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebWorkerProxy);
+};
+
+#endif  // CHROME_RENDERER_WEBWORKER_PROXY_H_