Cleanup: Remove unneeded browser_thread.h includes in contents.

content/browser/renderer_host/pepper/pepper_udp_socket.cc

 // 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.
 
 #include "content/browser/renderer_host/pepper/pepper_udp_socket.h"
 
 #include <string.h>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "content/browser/renderer_host/pepper/pepper_message_filter.h"
-#include "content/public/browser/browser_thread.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/udp/udp_server_socket.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/private/net_address_private_impl.h"
 #include "ppapi/shared_impl/private/udp_socket_private_impl.h"
 
 using ppapi::NetAddressPrivateImpl;
 
 namespace content {
@@ skipping 163 matching lines @@
     SendSendToACKError();
   } else {
     manager_->Send(new PpapiMsg_PPBUDPSocket_SendToACK(
         routing_id_, plugin_dispatcher_id_, socket_id_, true, result));
   }
 
   sendto_buffer_ = NULL;
 }
 
 }  // namespace content