Support sending a sliced file in chromium....

net/spdy/spdy_network_transaction.cc

 // Copyright (c) 2009 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/spdy/spdy_network_transaction.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/stats_counters.h"
@@ skipping 228 matching lines @@
   if (result < 0)
     return result;
 
   next_state_ = STATE_SEND_REQUEST;
   return OK;
 }
 
 int SpdyNetworkTransaction::DoSendRequest() {
   next_state_ = STATE_SEND_REQUEST_COMPLETE;
   CHECK(!stream_.get());
-  UploadDataStream* upload_data = request_->upload_data ?
-      new UploadDataStream(request_->upload_data) : NULL;
+  UploadDataStream* upload_data = NULL;
+  if (request_->upload_data) {
+    int error_code;
+    upload_data = UploadDataStream::Create(request_->upload_data, &error_code);
+    if (!upload_data)
+      return error_code;
+  }
   stream_ = spdy_->GetOrCreateStream(*request_, upload_data, net_log_);
   // Release the reference to |spdy_| since we don't need it anymore.
   spdy_ = NULL;
   return stream_->SendRequest(upload_data, &response_, &io_callback_);
 }
 
 int SpdyNetworkTransaction::DoSendRequestComplete(int result) {
   if (result < 0)
     return result;
 
@@ skipping 22 matching lines @@
   user_buffer_ = NULL;
   user_buffer_len_ = 0;
 
   if (result <= 0)
     stream_ = NULL;
 
   return result;
 }
 
 }  // namespace net