Use quiche string libraries in third_party/quic/core

gfe-relnote: n/a, no functional change
PiperOrigin-RevId: 285401547
Change-Id: Ice6d421ff7058fe2d47aee426d7634b6d403ee3f
diff --git a/quic/core/quic_utils_test.cc b/quic/core/quic_utils_test.cc
index 362c766..2633bab 100644
--- a/quic/core/quic_utils_test.cc
+++ b/quic/core/quic_utils_test.cc
@@ -11,6 +11,7 @@
 #include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
 #include "net/third_party/quiche/src/quic/test_tools/quic_test_utils.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
 
 namespace quic {
 namespace test {
@@ -99,7 +100,7 @@
     data[i] = i % 255;
   }
   EXPECT_EQ(IncrementalHashReference(data.data(), data.size()),
-            QuicUtils::FNV1a_128_Hash(QuicStringPiece(
+            QuicUtils::FNV1a_128_Hash(quiche::QuicheStringPiece(
                 reinterpret_cast<const char*>(data.data()), data.size())));
 }