Remove quiche::QuicheStringPiece and quiche::QuicheStringPieceHash.

Also replace some MOCK_METHOD1 with MOCK_METHOD to make the linter happy.

PiperOrigin-RevId: 336909722
Change-Id: I68bcc1a674815934fb271870eac2dff9028d980d
diff --git a/http2/platform/api/http2_string_utils_test.cc b/http2/platform/api/http2_string_utils_test.cc
index e3d499c..5cb019d 100644
--- a/http2/platform/api/http2_string_utils_test.cc
+++ b/http2/platform/api/http2_string_utils_test.cc
@@ -6,8 +6,8 @@
 
 #include <cstdint>
 
+#include "absl/strings/string_view.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_str_cat.h"
-#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_test.h"
 
 namespace http2 {
@@ -23,7 +23,7 @@
   // Single string-like argument.
   const char kFoo[] = "foo";
   const std::string string_foo(kFoo);
-  const quiche::QuicheStringPiece stringpiece_foo(string_foo);
+  const absl::string_view stringpiece_foo(string_foo);
   Http2StrAppend(&output, kFoo);
   EXPECT_EQ("foo", output);
   Http2StrAppend(&output, string_foo);
@@ -39,7 +39,7 @@
 
   // Two string-like arguments.
   const char kBar[] = "bar";
-  const quiche::QuicheStringPiece stringpiece_bar(kBar);
+  const absl::string_view stringpiece_bar(kBar);
   const std::string string_bar(kBar);
   Http2StrAppend(&output, kFoo, kBar);
   EXPECT_EQ("foobar", output);