Migrate off of base::StringPrintf

Bug: 302723053
Test: mma
Change-Id: Id7f0b1d0a11747a5a61a2550f05d7caaabf339a3
diff --git a/libs/binder/tests/format.h b/libs/binder/tests/format.h
new file mode 100644
index 0000000..b5440a4
--- /dev/null
+++ b/libs/binder/tests/format.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// TODO(b/302723053): remove this header and replace with <format> once b/175635923 is done
+// ETA for this blocker is 2023-10-27~2023-11-10.
+// Also, remember to remove fmtlib's format.cc from trusty makefiles.
+
+#if __has_include(<format>)
+#include <format>
+#else
+#include <fmt/format.h>
+
+namespace std {
+using fmt::format;
+}
+#endif
\ No newline at end of file