Cleanup: Remove unneeded forward declarations from chrome/browser/chromeos.

chrome/browser/chromeos/web_socket_proxy.h

 // Copyright (c) 2011 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_BROWSER_CHROMEOS_WEB_SOCKET_PROXY_H_
 #define CHROME_BROWSER_CHROMEOS_WEB_SOCKET_PROXY_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 
-struct sockaddr;
-
 namespace chromeos {
 
 class WebSocketProxy {
  public:
   static const size_t kBufferLimit = 12 * 1024 * 1024;
 
   // Limits incoming websocket headers in initial stage of connection.
   static const size_t kHeaderLimit = 32 * 1024;
 
   // Limits number of simultaneously open connections.
@@ skipping 14 matching lines @@
 
  private:
   void* impl_;
 
   DISALLOW_COPY_AND_ASSIGN(WebSocketProxy);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_WEB_SOCKET_PROXY_H_