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

chrome/worker/webworkerclient_proxy.h

Index: chrome/worker/webworkerclient_proxy.h
===================================================================
--- chrome/worker/webworkerclient_proxy.h	(revision 0)
+++ chrome/worker/webworkerclient_proxy.h	(revision 0)
@@ -0,0 +1,68 @@
+// 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_WORKER_WEBWORKERCLIENT_PROXY_H_
+#define CHROME_WORKER_WEBWORKERCLIENT_PROXY_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "chrome/common/ipc_channel.h"
+#include "googleurl/src/gurl.h"
+#include "webkit/glue/webworkerclient.h"
+
+class WebWorker;
+
+// This class receives IPCs from the renderer and calls the WebCore::Worker
+// implementation (after the data types have been converted by glue code).  It
+// is also called by the worker code and converts these function calls into
+// IPCs that are sent to the renderer, where they're converted back to function
+// calls by WebWorkerProxy.
+class WebWorkerClientProxy : public WebWorkerClient,
+                             public IPC::Channel::Listener {
+ public:
+  WebWorkerClientProxy (const GURL& url, int route_id);
+  ~WebWorkerClientProxy ();
+
+  // WebWorkerClient implementation.
+  void PostMessageToWorkerObject(const string16& message);
+  void PostExceptionToWorkerObject(
+      const string16& error_message,
+      int line_number,
+      const string16& source_url);
+  void PostConsoleMessageToWorkerObject(
+      int destination,
+      int source,
+      int level,
+      const string16& message,
+      int line_number,
+      const string16& source_url);
+  void ConfirmMessageFromWorkerObject(bool has_pending_activity);
+  void ReportPendingActivity(bool has_pending_activity);
+  void WorkerContextDestroyed();
+
+  // IPC::Channel::Listener implementation.
+  void OnMessageReceived(const IPC::Message& message);
+
+ private:
+  bool Send(IPC::Message* message);
+
+  // The source url for this worker.
+  GURL url_;
+
+  int route_id_;
+
+  // Whether we've received StartWorkerContext message.
+  bool started_worker_;
+
+  scoped_ptr<WebWorker> impl_;
+
+  // Stores messages that arrived before the StartWorkerContext message.
+  std::vector<IPC::Message*> queued_messages_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebWorkerClientProxy);
+};
+
+#endif  // CHROME_WORKER_WEBWORKERCLIENT_PROXY_H_