libbinder_random_parcel: hide fill parcel data

We have no external users of this function, and I'd generally
recommend against using it (it doesn't test things in RPC mode
currently, and it limits the branches that would be explored).
Hiding it for now.

Bug: 224646709
Test: run binder_parcel_fuzzer
Change-Id: Iafb61b9e201861f2f87de2f99217294b0d532881
diff --git a/libs/binder/tests/parcel_fuzzer/include_random_parcel/fuzzbinder/random_parcel.h b/libs/binder/tests/parcel_fuzzer/include_random_parcel/fuzzbinder/random_parcel.h
index 749bf21..db35e39 100644
--- a/libs/binder/tests/parcel_fuzzer/include_random_parcel/fuzzbinder/random_parcel.h
+++ b/libs/binder/tests/parcel_fuzzer/include_random_parcel/fuzzbinder/random_parcel.h
@@ -24,8 +24,4 @@
  * Fill parcel data, including some random binder objects and FDs
  */
 void fillRandomParcel(Parcel* p, FuzzedDataProvider&& provider);
-/**
- * Fill parcel data, but don't fill any objects.
- */
-void fillRandomParcelData(Parcel* p, FuzzedDataProvider&& provider);
 } // namespace android
diff --git a/libs/binder/tests/parcel_fuzzer/random_parcel.cpp b/libs/binder/tests/parcel_fuzzer/random_parcel.cpp
index 8bf04cc..89eadae 100644
--- a/libs/binder/tests/parcel_fuzzer/random_parcel.cpp
+++ b/libs/binder/tests/parcel_fuzzer/random_parcel.cpp
@@ -34,6 +34,11 @@
     String16 mDescriptor;
 };
 
+static void fillRandomParcelData(Parcel* p, FuzzedDataProvider&& provider) {
+    std::vector<uint8_t> data = provider.ConsumeBytes<uint8_t>(provider.remaining_bytes());
+    CHECK(OK == p->write(data.data(), data.size()));
+}
+
 void fillRandomParcel(Parcel* p, FuzzedDataProvider&& provider) {
     if (provider.ConsumeBool()) {
         auto session = RpcSession::make(RpcTransportCtxFactoryRaw::make());
@@ -85,9 +90,4 @@
     }
 }
 
-void fillRandomParcelData(Parcel* p, FuzzedDataProvider&& provider) {
-    std::vector<uint8_t> data = provider.ConsumeBytes<uint8_t>(provider.remaining_bytes());
-    CHECK(OK == p->write(data.data(), data.size()));
-}
-
 } // namespace android