Add QuicStringPiece which is actually StringPiece.

net/quic/quartc/quartc_stream.cc

Index: net/quic/quartc/quartc_stream.cc
diff --git a/net/quic/quartc/quartc_stream.cc b/net/quic/quartc/quartc_stream.cc
index e702a5874ee66c40685631011df9eb0189f25cc4..620b193894e03cf7b671e8d840035a7b1ab631e4 100644
--- a/net/quic/quartc/quartc_stream.cc
+++ b/net/quic/quartc/quartc_stream.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "net/quic/quartc/quartc_stream.h"
+#include "net/quic/platform/api/quic_string_piece.h"
 
 namespace net {
 
@@ -53,7 +54,7 @@ bool QuartcStream::fin_sent() {
 void QuartcStream::Write(const char* data,
                          size_t size,
                          const WriteParameters& param) {
-  WriteOrBufferData(base::StringPiece(data, size), param.fin, nullptr);
+  WriteOrBufferData(QuicStringPiece(data, size), param.fin, nullptr);
 }
 
 void QuartcStream::Close() {