init repo.

third_party/gflags/test/gflags_declare_flags.cc

@@ -0,0 +1,12 @@
+#define GFLAGS_DLL_DECLARE_FLAG
+
+#include <iostream>
+#include <gflags/gflags_declare.h>
+
+DECLARE_string(message); // in gflags_delcare_test.cc
+
+void print_message();
+void print_message()
+{
+  std::cout << FLAGS_message << std::endl;
+}