[WebSocket] Send a close frame when the renderer process is gone.

content/browser/renderer_host/websocket_host.h

 // Copyright 2013 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_BROWSER_RENDERER_HOST_WEBSOCKET_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_WEBSOCKET_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 22 matching lines @@
 
 // Host of net::WebSocketChannel. The lifetime of an instance of this class is
 // completely controlled by the WebSocketDispatcherHost object.
 class CONTENT_EXPORT WebSocketHost {
  public:
   WebSocketHost(int routing_id,
                 WebSocketDispatcherHost* dispatcher,
                 net::URLRequestContext* url_request_context);
   virtual ~WebSocketHost();
 
+  // The renderer process is going away.
+  // This function is virtual for testing.
+  virtual void GoAway();
+
   // General message dispatch. WebSocketDispatcherHost::OnMessageReceived
   // delegates to this method after looking up the |routing_id|.
   virtual bool OnMessageReceived(const IPC::Message& message);
 
+  int routing_id() const { return routing_id_; }
+
  private:
   // Handlers for each message type, dispatched by OnMessageReceived(), as
   // defined in content/common/websocket_messages.h
 
   void OnAddChannelRequest(const GURL& socket_url,
                            const std::vector<std::string>& requested_protocols,
                            const url::Origin& origin,
                            int render_frame_id);
 
   void OnSendFrame(bool fin,
@@ skipping 15 matching lines @@
 
   // The ID used to route messages.
   const int routing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(WebSocketHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_WEBSOCKET_HOST_H_