Remove Http2StringPiece; use QuicheStringPiece instead.

gfe-relnote: n/a, no functional change.
PiperOrigin-RevId: 285412823
Change-Id: I907a65813e890ce153b93fe5f07721efb3ecc195
diff --git a/http2/test_tools/http2_random.cc b/http2/test_tools/http2_random.cc
index 6b61a58..df20364 100644
--- a/http2/test_tools/http2_random.cc
+++ b/http2/test_tools/http2_random.cc
@@ -16,7 +16,7 @@
   HTTP2_LOG(INFO) << "Initialized test RNG with the following key: " << Key();
 }
 
-Http2Random::Http2Random(Http2StringPiece key) {
+Http2Random::Http2Random(quiche::QuicheStringPiece key) {
   std::string decoded_key = Http2HexDecode(key);
   CHECK_EQ(sizeof(key_), decoded_key.size());
   memcpy(key_, decoded_key.data(), sizeof(key_));
@@ -58,8 +58,9 @@
   return value.f - 1.0;
 }
 
-std::string Http2Random::RandStringWithAlphabet(int length,
-                                                Http2StringPiece alphabet) {
+std::string Http2Random::RandStringWithAlphabet(
+    int length,
+    quiche::QuicheStringPiece alphabet) {
   std::string result;
   result.resize(length);
   for (int i = 0; i < length; i++) {