Remove SpdyStringPiece; use QuicheStringPiece instead.

gfe-relnote: n/a, no functional change.
PiperOrigin-RevId: 288029999
Change-Id: If83322cadaac9647f246fa8ef18f5ce870995aa3
diff --git a/spdy/core/hpack/hpack_decoder_adapter.cc b/spdy/core/hpack/hpack_decoder_adapter.cc
index b3bce70..fd5a5be 100644
--- a/spdy/core/hpack/hpack_decoder_adapter.cc
+++ b/spdy/core/hpack/hpack_decoder_adapter.cc
@@ -171,7 +171,7 @@
 }
 
 void HpackDecoderAdapter::ListenerAdapter::OnHeaderErrorDetected(
-    SpdyStringPiece error_message) {
+    quiche::QuicheStringPiece error_message) {
   SPDY_VLOG(1) << error_message;
 }