diff --git a/tools/aapt2/test/Fixture.h b/tools/aapt2/test/Fixture.h
index fce2aeb..457d65e 100644
--- a/tools/aapt2/test/Fixture.h
+++ b/tools/aapt2/test/Fixture.h
@@ -58,7 +58,7 @@
 
   // Creates a file with the specified contents, creates any intermediate directories in the
   // process. The file path must be an absolute path within the test directory.
-  bool WriteFile(const std::string& path, const std::string& contents);
+  void WriteFile(const std::string& path, const std::string& contents);
 
  private:
   std::string temp_dir_;
@@ -75,6 +75,9 @@
   bool CompileFile(const std::string& path, const std::string& contents,
                    const android::StringPiece& flat_out_dir, IDiagnostics* diag);
 
+  // Executes the link command with the specified arguments.
+  bool Link(const std::vector<std::string>& args, IDiagnostics* diag);
+
   // Executes the link command with the specified arguments. The flattened files residing in the
   // flat directory will be added to the link command as file arguments.
   bool Link(const std::vector<std::string>& args, const android::StringPiece& flat_dir,