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

base/test/launcher/test_results_tracker.h

 // 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.
 
 #ifndef BASE_TEST_LAUNCHER_TEST_RESULTS_TRACKER_H_
 #define BASE_TEST_LAUNCHER_TEST_RESULTS_TRACKER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 43 matching lines @@
   // Prints a summary of current test iteration to stdout.
   void PrintSummaryOfCurrentIteration() const;
 
   // Prints a summary of all test iterations (not just the last one) to stdout.
   void PrintSummaryOfAllIterations() const;
 
   // Adds a string tag to the JSON summary. This is intended to indicate
   // conditions that affect the entire test run, as opposed to individual tests.
   void AddGlobalTag(const std::string& tag);
 
-  // Saves a JSON summary of all test iterations results to |path|. Returns
+  // Saves a JSON summary of all test iterations results to |path|. Adds
+  // |additional_tags| to the summary (just for this invocation). Returns
   // true on success.
-  bool SaveSummaryAsJSON(const FilePath& path) const WARN_UNUSED_RESULT;
+  bool SaveSummaryAsJSON(
+      const FilePath& path,
+      const std::vector<std::string>& additional_tags) const WARN_UNUSED_RESULT;
 
   // Map where keys are test result statuses, and values are sets of tests
   // which finished with that status.
   typedef std::map<TestResult::Status, std::set<std::string> > TestStatusMap;
 
   // Returns a test status map (see above) for current test iteration.
   TestStatusMap GetTestStatusMapForCurrentIteration() const;
 
   // Returns a test status map (see above) for all test iterations.
   TestStatusMap GetTestStatusMapForAllIterations() const;
@@ skipping 55 matching lines @@
 
   // File handle of output file (can be NULL if no file).
   FILE* out_;
 
   DISALLOW_COPY_AND_ASSIGN(TestResultsTracker);
 };
 
 }  // namespace base
 
 #endif  // BASE_TEST_LAUNCHER_TEST_RESULTS_TRACKER_H_