[Chromecast] Consolidate duplicated crash test functions.

chromecast/crash/linux/crash_testing_utils.h

+// Copyright 2015 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 CHROMECAST_CRASH_LINUX_CRASH_TESTING_UTILS_H_
+#define CHROMECAST_CRASH_LINUX_CRASH_TESTING_UTILS_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+
+namespace chromecast {
+
+class DumpInfo;
+
+scoped_ptr<DumpInfo> CreateDumpInfo(const std::string& json_string);

[slan, 2015/07/28 23:50:30]

Please put brief comments detailing |inputs| and return values. Doesn't have to
be crazy verbose, just enough to prevent the need to visit .cc

[bcf_google, 2015/07/29 00:41:13]

Done.

+
+bool FetchDumps(const std::string& lockfile_path,
+                ScopedVector<DumpInfo>* dumps);
+
+bool CreateLockFile(const std::string& lockfile_path);
+
+bool AppendLockFile(const std::string& lockfile_path, const DumpInfo& dump);
+}
+
+#endif  // CHROMECAST_CRASH_LINUX_CRASH_TESTING_UTILS_H_