GTTF: Make --help and --gtest_help behave correctly with --brave-new-test-launcher

base/test/test_launcher.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/test/test_launcher.h"
 
 #if defined(OS_POSIX)
 #include <fcntl.h>
 #endif
 
@@ skipping 537 matching lines @@
                 total_shards,
                 shard_index,
                 new_cycles,
                 exit_code)));
 }
 
 
 }  // namespace
 
 const char kGTestFilterFlag[] = "gtest_filter";
+const char kGTestHelpFlag[]   = "gtest_help";
 const char kGTestListTestsFlag[] = "gtest_list_tests";
 const char kGTestRepeatFlag[] = "gtest_repeat";
 const char kGTestRunDisabledTestsFlag[] = "gtest_also_run_disabled_tests";
 const char kGTestOutputFlag[] = "gtest_output";
 
 const char kHelpFlag[]   = "help";
 
 TestResult::TestResult() : status(TEST_UNKNOWN) {
 }
 
@@ skipping 153 matching lines @@
            cycles,
            &exit_code,
            true));
 
   MessageLoop::current()->Run();
 
   return exit_code;
 }
 
 }  // namespace base