Add chunked uploads support to SPDY

net/base/upload_data_stream.cc

Index: net/base/upload_data_stream.cc
diff --git a/net/base/upload_data_stream.cc b/net/base/upload_data_stream.cc
index 9f7bdbb419a28d63610b9235c0d5fcd9a6b5952e..4a056f43557b6da1f316bbce3661cf47f4cedcb9 100644
--- a/net/base/upload_data_stream.cc
+++ b/net/base/upload_data_stream.cc
@@ -12,6 +12,8 @@
 
 namespace net {
 
+bool UploadDataStream::merge_chunks_ = true;
+
 UploadDataStream::~UploadDataStream() {
 }
 
@@ -69,8 +71,13 @@ int UploadDataStream::FillBuf() {
 
       size_t bytes_copied = std::min(count, size_remaining);
 
-      memcpy(buf_->data() + buf_len_, &d[next_element_offset_], bytes_copied);
-      buf_len_ += bytes_copied;
+      // Check if we have anything to copy first, because we are getting the
+      // address of an element in |d| and that will throw an exception if |d|
+      // is an empty vector.
+      if (bytes_copied) {
+        memcpy(buf_->data() + buf_len_, &d[next_element_offset_], bytes_copied);
+        buf_len_ += bytes_copied;
+      }
 
       if (bytes_copied == count) {
         advance_to_next_element = true;
@@ -126,6 +133,9 @@ int UploadDataStream::FillBuf() {
       next_element_remaining_ = 0;
       next_element_stream_.reset();
     }
+
+    if (is_chunked() && !merge_chunks_)
+      break;
   }
 
   if (next_element_ == elements.size() && !buf_len_) {
@@ -138,4 +148,13 @@ int UploadDataStream::FillBuf() {
   return OK;
 }
 
+bool UploadDataStream::IsOnLastChunk() const {
+  const std::vector<UploadData::Element>& elements = *data_->elements();
+  DCHECK(data_->is_chunked());
+  return (eof_ ||
+          (!elements.empty() &&
+           next_element_ == elements.size() &&
+           elements.back().is_last_chunk()));
+}
+
 }  // namespace net