Update from https://crrev.com/312398

base/test/gtest_util.cc

 // 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"
@@ skipping 22 matching lines @@
     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);
 }
 
+bool ReadTestNamesFromFile(const FilePath& path,
+                           std::vector<SplitTestName>* output) {
+  JSONFileValueSerializer deserializer(path);
+  int error_code = 0;
+  std::string error_message;
+  scoped_ptr<base::Value> value(
+      deserializer.Deserialize(&error_code, &error_message));
+  if (!value.get())
+    return false;
+
+  base::ListValue* tests = nullptr;
+  if (!value->GetAsList(&tests))
+    return false;
+
+  std::vector<base::SplitTestName> result;
+  for (base::ListValue::iterator i = tests->begin(); i != tests->end(); ++i) {
+    base::DictionaryValue* test = nullptr;
+    if (!(*i)->GetAsDictionary(&test))
+      return false;
+
+    std::string test_case_name;
+    if (!test->GetStringASCII("test_case_name", &test_case_name))
+      return false;
+
+    std::string test_name;
+    if (!test->GetStringASCII("test_name", &test_name))
+      return false;
+
+    result.push_back(std::make_pair(test_case_name, test_name));
+  }
+
+  output->swap(result);
+  return true;
+}
+
 }  // namespace