net: Make UploadDataStream::Read() asynchronous

net/spdy/spdy_http_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/spdy/spdy_http_stream.h"
 
 #include <algorithm>
 #include <list>
 #include <string>
 
@@ skipping 265 matching lines @@
   callback_.Reset();
   if (stream_)
     stream_->Cancel();
 }
 
 int SpdyHttpStream::SendData() {
   CHECK(request_body_stream_.get());
   CHECK_EQ(0, request_body_buf_->BytesRemaining());
 
   // Read the data from the request body stream.
-  const int bytes_read = request_body_stream_->Read(
+  const int bytes_read = request_body_stream_->ReadSync(
       raw_request_body_buf_, raw_request_body_buf_->size());
   DCHECK(!waiting_for_chunk_ || bytes_read != ERR_IO_PENDING);
 
   if (request_body_stream_->is_chunked() && bytes_read == ERR_IO_PENDING) {
     waiting_for_chunk_ = true;
     return ERR_IO_PENDING;
   }
 
   waiting_for_chunk_ = false;
 
@@ skipping 245 matching lines @@
 bool SpdyHttpStream::IsSpdyHttpStream() const {
   return true;
 }
 
 void SpdyHttpStream::Drain(HttpNetworkSession* session) {
   Close(false);
   delete this;
 }
 
 }  // namespace net