Add const accessors to URLRequest and UploadData.

net/base/upload_data_stream.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 "net/base/upload_data_stream.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/threading/thread_restrictions.h"
 #include "net/base/file_stream.h"
@@ skipping 52 matching lines @@
 
   // Reset the offset, as upload_data_ may already be read (i.e. UploadData
   // can be reused for a new UploadDataStream).
   upload_data_->ResetOffset();
 
   initialized_successfully_ = true;
   return OK;
 }
 
 int UploadDataStream::Read(IOBuffer* buf, int buf_len) {
-  std::vector<UploadData::Element>& elements = *upload_data_->elements();
+  std::vector<UploadData::Element>& elements =
+      *upload_data_->elements_mutable();
 
   int bytes_copied = 0;
   while (bytes_copied < buf_len && element_index_ < elements.size()) {
     UploadData::Element& element = elements[element_index_];
 
     bytes_copied += element.ReadSync(buf->data() + bytes_copied,
                                      buf_len - bytes_copied);
 
     if (element.BytesRemaining() == 0)
         ++element_index_;
@@ skipping 24 matching lines @@
   return false;
 }
 
 bool UploadDataStream::IsInMemory() const {
   DCHECK(initialized_successfully_);
 
   return upload_data_->IsInMemory();
 }
 
 }  // namespace net