Roll forward up to cl/353292511.

cpp/core/internal/fuzzers/BUILD

@@ -0,0 +1,12 @@
+load("//security/fuzzing/blaze:cc_fuzz_target.bzl", "cc_fuzz_target")
+
+cc_fuzz_target(
+    name = "offline_frames_fuzzer",
+    srcs = ["offline_frames_fuzzer.cc"],
+    componentid = 148515,
+    deps = [
+        "//core/internal",
+        "//platform/base",
+        "//security/fuzzing/blaze:default_init_google_for_cc_fuzz_target",
+    ],
+)

cpp/core/internal/fuzzers/offline_frames_fuzzer.cc

@@ -0,0 +1,11 @@
+#include "core/internal/offline_frames.h"
+#include "platform/base/byte_array.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  location::nearby::ByteArray byte_array;
+  byte_array.SetData(reinterpret_cast<const char*>(data), size);
+
+  location::nearby::connections::parser::FromBytes(byte_array);
+
+  return 0;
+}