[fuzzers] Convert memory_quota_fuzzer to fuzztest (grpc#38594)

Closes grpc#38594

COPYBARA_INTEGRATE_REVIEW=grpc#38594 from ctiller:rq e5ac14c
PiperOrigin-RevId: 720676020

test/core/resource_quota/BUILD

@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_package")
-load("//test/core/test_util:grpc_fuzzer.bzl", "grpc_fuzz_test", "grpc_proto_fuzzer")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_proto_library", "grpc_cc_test", "grpc_internal_proto_library", "grpc_package")
+load("//test/core/test_util:grpc_fuzzer.bzl", "grpc_fuzz_test")
 
 licenses(["notice"])
 
@@ -133,21 +133,30 @@ grpc_cc_test(
     ],
 )
 
-grpc_proto_fuzzer(
+grpc_internal_proto_library(
+    name = "memory_quota_fuzzer_proto",
+    srcs = ["memory_quota_fuzzer.proto"],
+    deps = ["//test/core/test_util:fuzz_config_vars_proto"],
+)
+
+grpc_cc_proto_library(
+    name = "memory_quota_fuzzer_cc_proto",
+    deps = ["memory_quota_fuzzer_proto"],
+)
+
+grpc_fuzz_test(
     name = "memory_quota_fuzzer",
     srcs = ["memory_quota_fuzzer.cc"],
-    corpus = "memory_quota_fuzzer_corpus",
     external_deps = [
         "absl/status",
         "absl/strings",
+        "gtest",
+        "fuzztest",
+        "fuzztest_main",
     ],
-    proto = "memory_quota_fuzzer.proto",
-    proto_deps = ["//test/core/test_util:fuzz_config_vars_proto"],
-    tags = ["no_windows"],
-    uses_event_engine = False,
-    uses_polling = False,
     deps = [
         "call_checker",
+        "memory_quota_fuzzer_cc_proto",
         "//:debug_location",
         "//:exec_ctx",
         "//:gpr",

test/core/resource_quota/memory_quota_fuzzer.cc

@@ -27,6 +27,8 @@
 
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
+#include "fuzztest/fuzztest.h"
+#include "gtest/gtest.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/experiments/config.h"
 #include "src/core/lib/iomgr/closure.h"
@@ -35,15 +37,11 @@
 #include "src/core/lib/resource_quota/memory_quota.h"
 #include "src/core/util/debug_location.h"
 #include "src/core/util/useful.h"
-#include "src/libfuzzer/libfuzzer_macro.h"
 #include "test/core/resource_quota/call_checker.h"
 #include "test/core/resource_quota/memory_quota_fuzzer.pb.h"
 #include "test/core/test_util/fuzz_config_vars.h"
 #include "test/core/test_util/test_config.h"
 
-bool squelch = true;
-bool leak_check = true;
-
 namespace grpc_core {
 namespace testing {
 namespace {
@@ -182,17 +180,15 @@ class Fuzzer {
   std::map<int, MemoryAllocator::Reservation> allocations_;
 };
 
-}  // namespace
-}  // namespace testing
-}  // namespace grpc_core
-
-DEFINE_PROTO_FUZZER(const memory_quota_fuzzer::Msg& msg) {
-  if (squelch) {
-    grpc_disable_all_absl_logs();
-  }
-  grpc_core::ApplyFuzzConfigVars(msg.config_vars());
-  grpc_core::TestOnlyReloadExperimentsFromConfigVariables();
+void Fuzz(const memory_quota_fuzzer::Msg& msg) {
+  ApplyFuzzConfigVars(msg.config_vars());
+  TestOnlyReloadExperimentsFromConfigVariables();
   gpr_log_verbosity_init();
   grpc_tracer_init();
-  grpc_core::testing::Fuzzer().Run(msg);
+  testing::Fuzzer().Run(msg);
 }
+FUZZ_TEST(MemoryQuotaFuzzer, Fuzz);
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc_core