diff --git a/common/utils.cc b/common/utils.cc
index f0c045f..1fa2d41 100644
--- a/common/utils.cc
+++ b/common/utils.cc
@@ -86,6 +86,7 @@
 // The path to the kernel's boot_id.
 const char kBootIdPath[] = "/proc/sys/kernel/random/boot_id";
 
+}  // namespace
 // If |path| is absolute, or explicit relative to the current working directory,
 // leaves it as is. Otherwise, uses the system's temp directory, as defined by
 // base::GetTempDir() and prepends it to |path|. On success stores the full
@@ -110,8 +111,6 @@
   return true;
 }
 
-}  // namespace
-
 namespace utils {
 
 bool WriteFile(const char* path, const void* data, size_t data_len) {
diff --git a/common/utils.h b/common/utils.h
index 6bb89f1..ae07b07 100644
--- a/common/utils.h
+++ b/common/utils.h
@@ -559,6 +559,8 @@
 [[nodiscard]] std::string_view ToStringView(const void* data,
                                             size_t size) noexcept;
 
+bool GetTempName(const std::string& path, base::FilePath* template_path);
+
 }  // namespace chromeos_update_engine
 
 #define TEST_AND_RETURN_FALSE_ERRNO(_x)                             \