Update from https://crrev.com/306655

base/test/gtest_util.cc

Index: base/test/gtest_util.cc
diff --git a/base/test/gtest_util.cc b/base/test/gtest_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..47fd6397fcc6d86d6eb3c39bc10ee013b0e835d3
--- /dev/null
+++ b/base/test/gtest_util.cc
@@ -0,0 +1,43 @@
+// Copyright 2014 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/gtest_util.h"
+
+#include "base/files/file_path.h"
+#include "base/json/json_file_value_serializer.h"
+#include "base/values.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+
+std::vector<SplitTestName> GetCompiledInTests() {
+  testing::UnitTest* const unit_test = testing::UnitTest::GetInstance();
+
+  std::vector<SplitTestName> tests;
+  for (int i = 0; i < unit_test->total_test_case_count(); ++i) {
+    const testing::TestCase* test_case = unit_test->GetTestCase(i);
+    for (int j = 0; j < test_case->total_test_count(); ++j) {
+      const testing::TestInfo* test_info = test_case->GetTestInfo(j);
+      tests.push_back(std::make_pair(test_case->name(), test_info->name()));
+    }
+  }
+  return tests;
+}
+
+bool WriteCompiledInTestsToFile(const FilePath& path) {
+  std::vector<SplitTestName> tests(GetCompiledInTests());
+
+  ListValue root;
+  for (size_t i = 0; i < tests.size(); ++i) {
+    DictionaryValue* test_info = new DictionaryValue;
+    test_info->SetString("test_case_name", tests[i].first);
+    test_info->SetString("test_name", tests[i].second);
+    root.Append(test_info);
+  }
+
+  JSONFileValueSerializer serializer(path);
+  return serializer.Serialize(root);
+}
+
+}  // namespace