chore: import upstream snapshot with attribution

tests/android_gtest_main.cc

@@ -0,0 +1,26 @@
+// Custom gtest main for Android cross-compiled tests.
+//
+// On Android (NDK c++_static), static destructors of glog/gflags/etc. run
+// after main() returns, often in unpredictable order. This causes segfaults
+// (exit code 139) or aborts (134/135) during teardown even when all tests
+// passed.  Using _exit() skips the static destructor phase entirely.
+
+#include <cstdio>
+#include <cstdlib>
+#include <iostream>
+#include <unistd.h>
+#include "gtest/gtest.h"
+
+GTEST_API_ int main(int argc, char **argv) {
+  printf("Running main() from %s\n", __FILE__);
+  testing::InitGoogleTest(&argc, argv);
+  int ret = RUN_ALL_TESTS();
+  // Flush all output so the test runner can parse results
+  std::cout.flush();
+  std::cerr.flush();
+  fflush(stdout);
+  fflush(stderr);
+  // Use _exit() to skip static destructors and avoid glog/gflags teardown
+  // crashes that are common with NDK c++_static builds.
+  _exit(ret);
+}