Replace quiche::QuicheStringPiece with absl::string_view.

PiperOrigin-RevId: 336819830
Change-Id: Ib3e47a9e3ad9c563a60434b41be492e85e6e4038
diff --git a/http2/test_tools/http2_random.cc b/http2/test_tools/http2_random.cc
index df20364..5fb2f7d 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(quiche::QuicheStringPiece key) {
+Http2Random::Http2Random(absl::string_view key) {
   std::string decoded_key = Http2HexDecode(key);
   CHECK_EQ(sizeof(key_), decoded_key.size());
   memcpy(key_, decoded_key.data(), sizeof(key_));
@@ -58,9 +58,8 @@
   return value.f - 1.0;
 }
 
-std::string Http2Random::RandStringWithAlphabet(
-    int length,
-    quiche::QuicheStringPiece alphabet) {
+std::string Http2Random::RandStringWithAlphabet(int length,
+                                                absl::string_view alphabet) {
   std::string result;
   result.resize(length);
   for (int i = 0; i < length; i++) {