Use quiche string libraries in third_party/quic/platform

gfe-relnote: n/a, no functional change
PiperOrigin-RevId: 285416404
Change-Id: I5dc07c7b2e12a3d6bbc0d686a580fb262db1ecdc
diff --git a/quic/platform/api/quic_mem_slice_span.h b/quic/platform/api/quic_mem_slice_span.h
index 62cec48..a1e0bd0 100644
--- a/quic/platform/api/quic_mem_slice_span.h
+++ b/quic/platform/api/quic_mem_slice_span.h
@@ -7,6 +7,7 @@
 
 #include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
 #include "net/quic/platform/impl/quic_mem_slice_span_impl.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
 
 namespace quic {
 
@@ -37,8 +38,9 @@
     return impl_.ConsumeAll(consume);
   }
 
-  // Return data of the span at |index| by the form of a QuicStringPiece.
-  QuicStringPiece GetData(int index) { return impl_.GetData(index); }
+  // Return data of the span at |index| by the form of a
+  // quiche::QuicheStringPiece.
+  quiche::QuicheStringPiece GetData(int index) { return impl_.GetData(index); }
 
   // Return the total length of the data inside the span.
   QuicByteCount total_length() { return impl_.total_length(); }