Port WebSockets to Mojo IPC

content/child/websocket_message_filter.h

-// Copyright 2016 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 CONTENT_CHILD_WEBSOCKET_MESSAGE_FILTER_H_
-#define CONTENT_CHILD_WEBSOCKET_MESSAGE_FILTER_H_
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "ipc/message_filter.h"
-
-namespace base {
-class SingleThreadTaskRunner;
-}
-
-namespace content {
-
-class WebSocketDispatcher;
-
-// Delegates IPC messages to a WebSocketDispatcher on the loading task queue
-// instead of the default task queue.
-class WebSocketMessageFilter : public IPC::MessageFilter {
- public:
-  explicit WebSocketMessageFilter(WebSocketDispatcher* websocket_dispatcher);
-
-  // IPC::MessageFilter implementation.
-  bool OnMessageReceived(const IPC::Message& message) override;
-
-  void SetLoadingTaskRunner(
-      scoped_refptr<base::SingleThreadTaskRunner> loading_task_runner) {
-    loading_task_runner_ = loading_task_runner;
-  }
-
- private:
-  ~WebSocketMessageFilter() override;
-  void OnMessageReceivedOnMainThread(const IPC::Message& message);
-
-  scoped_refptr<base::SingleThreadTaskRunner> loading_task_runner_;
-
-  // This actual object is owned by a ChildThreadImpl and is derefed only on the
-  // main thread.
-  base::WeakPtr<WebSocketDispatcher> websocket_dispatcher_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebSocketMessageFilter);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_CHILD_WEBSOCKET_MESSAGE_FILTER_H_