Prototype of chunked transfer encoded POST.

net/base/upload_data_stream.h

Index: net/base/upload_data_stream.h
diff --git a/net/base/upload_data_stream.h b/net/base/upload_data_stream.h
index 8583fb46b850bc69e0705dbb403781a0af2e20a4..f291140348b7d2acea7b940eee783771fa36e018 100644
--- a/net/base/upload_data_stream.h
+++ b/net/base/upload_data_stream.h
@@ -30,7 +30,12 @@ class UploadDataStream {
   // Call to indicate that a portion of the stream's buffer was consumed.  This
   // call modifies the stream's buffer so that it contains the next segment of
   // the upload data to be consumed.
-  void DidConsume(size_t num_bytes);
+  void MarkConsumedAndFillBuffer(size_t num_bytes);
+
+  // Sets the callback to be invoked when new chunks are available to upload.
+  void set_chunk_callback(ChunkCallback* callback) {
+    data_->set_chunk_callback(callback);
+  }
 
   // Returns the total size of the data stream and the current position.
   // size() is not to be used to determine whether the stream has ended
@@ -39,6 +44,8 @@ class UploadDataStream {
   uint64 size() const { return total_size_; }
   uint64 position() const { return current_position_; }
 
+  bool is_chunked() const { return data_->is_chunked(); }
+
   // Returns whether there is no more data to read, regardless of whether
   // position < size.
   bool eof() const { return eof_; }
@@ -64,8 +71,8 @@ class UploadDataStream {
   scoped_refptr<IOBuffer> buf_;
   size_t buf_len_;
 
-  // Iterator to the upload element to be written to the send buffer next.
-  std::vector<UploadData::Element>::iterator next_element_;
+  // Index of the upload element to be written to the send buffer next.
+  size_t next_element_;
 
   // The byte offset into next_element_'s data buffer if the next element is
   // a TYPE_BYTES element.