Support sending BlobData to browser process. Also support sending UploadData...

net/base/upload_data.cc

 // Copyright (c) 2010 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.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "net/base/net_errors.h"
 
 namespace net {
 
 uint64 UploadData::GetContentLength() {
   uint64 len = 0;
   std::vector<Element>::iterator it = elements_.begin();
   for (; it != elements_.end(); ++it)
     len += (*it).GetContentLength();
   return len;
 }
 
 uint64 UploadData::Element::GetContentLength() {
   if (override_content_length_ || content_length_computed_)
     return content_length_;
 
   if (type_ == TYPE_BYTES)
     return static_cast<uint64>(bytes_.size());
+  else if (type_ == TYPE_BLOB)
+    // The blob reference will be resolved later.
+    return 0;
 
   DCHECK_EQ(TYPE_FILE, type_);
   DCHECK(!file_stream_);
 
   // TODO(darin): This size calculation could be out of sync with the state of
   // the file when we get around to reading it.  We should probably find a way
   // to lock the file or somehow protect against this error condition.
 
   content_length_computed_ = true;
   content_length_ = 0;
@@ skipping 43 matching lines @@
                     << "\" to offset: " << file_range_offset_ << " (" << rv
                     << ")";
       return NULL;
     }
   }
 
   return file.release();
 }
 
 }  // namespace net