Reduce header dependencies in net/

net/base/upload_data_stream.cc

 // Copyright (c) 2006-2008 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 "net/base/upload_data_stream.h"
 
 #include "base/logging.h"
+#include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 
 namespace net {
 
 UploadDataStream::UploadDataStream(const UploadData* data)
     : data_(data),
       buf_(new IOBuffer(kBufSize)),
       buf_len_(0),
       next_element_(data->elements().begin()),
       next_element_offset_(0),
@@ skipping 82 matching lines @@
 
     if (advance_to_next_element) {
       ++next_element_;
       next_element_offset_ = 0;
       next_element_stream_.Close();
     }
   }
 }
 
 }  // namespace net