Bind RenderViewImpl routing_id to SocketStreamHost

content/common/socket_stream_handle_data.h

+// Copyright (c) 2012 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_RENDERER_SOCKET_STREAM_HANDLE_DATA_H_
+#define CONTENT_RENDERER_SOCKET_STREAM_HANDLE_DATA_H_
+#pragma once
+
+#include "base/supports_user_data.h"
+
+namespace WebKit {
+class WebSocketStreamHandle;
+}
+
+// User data stored in each WebSocketStreamHandleImpl.
+class SocketStreamHandleData : public base::SupportsUserData::Data {
+ public:
+  explicit SocketStreamHandleData(int render_view_id)
+      : render_view_id_(render_view_id) {
+  }
+  virtual ~SocketStreamHandleData() {}
+
+  int render_view_id() const { return render_view_id_; }
+
+  // Picks the stored user data from WebKit::WebSocketStreamHandle object.

[wtc, 2012/03/19 23:21:03]

Nit: Picks => Retrieves
           or Extracts

Nit: your use of "Virtually" on the next line sounds a little
strange to me.  I think you meant "Actually".  I suggest
you say:
  |handle| must actually be a WebSocketStreamHandleImpl object.

[Takashi Toyoshima, 2012/03/20 00:18:03]

Thank you.
"Actually" must be the right word that means I want to say.

+  // Virtually, |handle| must be WebSocketStreamHandleImpl object.
+  static const SocketStreamHandleData* ForHandle(
+      WebKit::WebSocketStreamHandle* handle);
+
+ private:
+  int render_view_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(SocketStreamHandleData);
+};
+
+#endif  // CONTENT_RENDERER_SOCKET_STREAM_HANDLE_DATA_H_