Add log date to the metrics log

components/metrics/persisted_logs_unittest.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 "components/metrics/persisted_logs.h"
 
 #include <stddef.h>
 
 #include "base/base64.h"
 #include "base/macros.h"
@@ skipping 93 matching lines @@
   EXPECT_EQ(PersistedLogs::RECALL_SUCCESS,
             result_persisted_logs.DeserializeLogs());
   EXPECT_EQ(1U, result_persisted_logs.size());
 
   // Verify that the result log matches the initial log.
   persisted_logs.StageLog();
   result_persisted_logs.StageLog();
   EXPECT_EQ(persisted_logs.staged_log(), result_persisted_logs.staged_log());
   EXPECT_EQ(persisted_logs.staged_log_hash(),
             result_persisted_logs.staged_log_hash());
+  EXPECT_EQ(persisted_logs.staged_log_timestamp(),
+            result_persisted_logs.staged_log_timestamp());
 }
 
 // Store a set of logs over the length limit, but smaller than the min number of
 // bytes.
 TEST_F(PersistedLogsTest, LongButTinyLogList) {
   TestPersistedLogs persisted_logs(&prefs_, kLogByteLimit);
 
   size_t log_count = kLogCountLimit * 5;
   for (size_t i = 0; i < log_count; ++i)
     persisted_logs.StoreLog("x");
@@ skipping 156 matching lines @@
 
   TestPersistedLogs persisted_logs(&prefs_, kLogByteLimit);
   persisted_logs.StoreLog(kFooText);
   persisted_logs.StageLog();
 
   EXPECT_EQ(Compress(kFooText), persisted_logs.staged_log());
   EXPECT_EQ(foo_hash, persisted_logs.staged_log_hash());
 }
 
 }  // namespace metrics