Save an early test summary in case the test launcher crashes or gets killed

base/test/launcher/test_results_tracker.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/launcher/test_results_tracker.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 278 matching lines @@
              "had unknown result");
 
   fprintf(stdout, "End of the summary.\n");
   fflush(stdout);
 }
 
 void TestResultsTracker::AddGlobalTag(const std::string& tag) {
   global_tags_.insert(tag);
 }
 
-bool TestResultsTracker::SaveSummaryAsJSON(const FilePath& path) const {
+bool TestResultsTracker::SaveSummaryAsJSON(
+    const FilePath& path,
+    const std::vector<std::string>& additional_tags) const {
   std::unique_ptr<DictionaryValue> summary_root(new DictionaryValue);
 
   std::unique_ptr<ListValue> global_tags(new ListValue);
   for (const auto& global_tag : global_tags_) {
     global_tags->AppendString(global_tag);
   }
+  for (const auto& tag : additional_tags) {
+    global_tags->AppendString(tag);
+  }
   summary_root->Set("global_tags", std::move(global_tags));
 
   std::unique_ptr<ListValue> all_tests(new ListValue);
   for (const auto& test : all_tests_) {
     all_tests->AppendString(test);
   }
   summary_root->Set("all_tests", std::move(all_tests));
 
   std::unique_ptr<ListValue> disabled_tests(new ListValue);
   for (const auto& disabled_test : disabled_tests_) {
@@ skipping 125 matching lines @@
 TestResultsTracker::PerIterationData::PerIterationData() {
 }
 
 TestResultsTracker::PerIterationData::PerIterationData(
     const PerIterationData& other) = default;
 
 TestResultsTracker::PerIterationData::~PerIterationData() {
 }
 
 }  // namespace base