Add missing declarations for Google Tests flags

Add declarations for install_failure_signal_handler and flagfile.

Fix Clang warnings:
| warning: no previous extern declaration for non-static variable
| 'FLAGS_gtest_install_failure_signal_handler' [-Wmissing-variable-declarations]
| warning: no previous extern declaration for non-static variable
| 'FLAGS_gtest_flagfile' | [-Wmissing-variable-declarations]

1 files changed, 8 insertions, 0 deletions

diff --git a/googletest/include/gtest/gtest.h b/googletest/include/gtest/gtest.h
index 2be8b112..5df4b0a3 100644
--- a/googletest/include/gtest/gtest.h
+++ b/googletest/include/gtest/gtest.h
@@ -116,6 +116,10 @@ GTEST_DECLARE_string_(color);
 // the tests to run. If the filter is not given all tests are executed.
 GTEST_DECLARE_string_(filter);
 
+// This flag controls whether Google Test installs a signal handler that dumps
+// debugging information when fatal signals are raised.
+GTEST_DECLARE_bool_(install_failure_signal_handler);
+
 // This flag causes the Google Test to list tests. None of the tests listed
 // are actually run if the flag is provided.
 GTEST_DECLARE_bool_(list_tests);
@@ -159,6 +163,10 @@ GTEST_DECLARE_bool_(throw_on_failure);
 // the specified host machine.
 GTEST_DECLARE_string_(stream_result_to);
 
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+GTEST_DECLARE_string_(flagfile);
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+
 // The upper limit for valid stack trace depths.
 const int kMaxStackTraceDepth = 100;