Remove old WebSocket implementation from content/

content/child/web_socket_stream_handle_impl.h

-// Copyright 2014 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_WEB_SOCKET_STREAM_HANDLE_IMPL_H_
-#define CONTENT_CHILD_WEB_SOCKET_STREAM_HANDLE_IMPL_H_
-
-#include "base/memory/ref_counted.h"
-#include "base/supports_user_data.h"
-#include "third_party/WebKit/public/platform/WebSocketStreamHandle.h"
-
-namespace content {
-
-class WebSocketStreamHandleImpl : public base::SupportsUserData,
-                                  public blink::WebSocketStreamHandle {
- public:
-  WebSocketStreamHandleImpl();
-  virtual ~WebSocketStreamHandleImpl();
-
-  // WebSocketStreamHandle methods:
-  virtual void connect(const blink::WebURL& url,
-                       blink::WebSocketStreamHandleClient* client);
-  virtual bool send(const blink::WebData& data);
-  virtual void close();
-
- private:
-  class Context;
-  scoped_refptr<Context> context_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebSocketStreamHandleImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_CHILD_WEB_SOCKET_STREAM_HANDLE_IMPL_H_