Add an async ReadInitialHeaders method to QuicChromiumClientStream::Handle

net/quic/chromium/quic_http_stream.h

Index: net/quic/chromium/quic_http_stream.h
diff --git a/net/quic/chromium/quic_http_stream.h b/net/quic/chromium/quic_http_stream.h
index 5e5d0c9b74bcff5b2c8116e13fde028de509b057..365a4383c6497e995d9488e23dcefbe4b5a72208 100644
--- a/net/quic/chromium/quic_http_stream.h
+++ b/net/quic/chromium/quic_http_stream.h
@@ -69,8 +69,6 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   void SetPriority(RequestPriority priority) override;
 
   // QuicChromiumClientStream::Delegate implementation
-  void OnInitialHeadersAvailable(const SpdyHeaderBlock& headers,
-                                 size_t frame_len) override;
   void OnDataAvailable() override;
   void OnTrailingHeadersAvailable(const SpdyHeaderBlock& headers,
                                   size_t frame_len) override;
@@ -124,6 +122,7 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   int DoSendBody();
   int DoSendBodyComplete(int rv);
 
+  void OnReadResponseHeadersComplete(int rv);
   int ProcessResponseHeaders(const SpdyHeaderBlock& headers);
 
   int ReadAvailableData(IOBuffer* buf, int buf_len);
@@ -181,6 +180,7 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   // Serialized request headers.
   SpdyHeaderBlock request_headers_;
 
+  SpdyHeaderBlock response_header_block_;
   bool response_headers_received_;
 
   // Number of bytes received by the headers stream on behalf of this stream.