[Chromecast] Consolidate duplicated crash test functions.

chromecast/crash/linux/dump_info_unittest.cc

 // 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.
 
 #include <time.h>
 
 #include "base/values.h"
-#include "chromecast/base/serializers.h"
+#include "chromecast/crash/linux/crash_testing_utils.h"
 #include "chromecast/crash/linux/dump_info.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chromecast {
 
-namespace {
-
-scoped_ptr<DumpInfo> CreateDumpInfo(const std::string& json_string) {
-  scoped_ptr<base::Value> value(DeserializeFromJson(json_string));
-  return make_scoped_ptr(new DumpInfo(value.get()));
-}
-
-}  // namespace
-
 TEST(DumpInfoTest, EmptyStringIsNotValid) {
   scoped_ptr<DumpInfo> dump_info(CreateDumpInfo(""));
   ASSERT_FALSE(dump_info->valid());
 }
 
 TEST(DumpInfoTest, TooFewFieldsIsNotValid) {
   scoped_ptr<DumpInfo> dump_info(CreateDumpInfo(
       "{"
       "\"name\": \"name\","
       "\"dump_time\" : \"2001-11-12 18:31:01\","
@@ skipping 162 matching lines @@
       "\"prev_app_name\": \"previous_app\","
       "\"cur_app_name\": \"current_app\","
       "\"last_app_name\": \"last_app\","
       "\"release_version\": \"RELEASE\","
       "\"build_number\": \"BUILD_NUMBER\","
       "\"hello\": \"extra_field\""
       "}"));
   ASSERT_FALSE(info->valid());
 }
 
-}  // chromecast
+}  // namespace chromecast