Add title update merge logic to reading list entry

components/reading_list/ios/reading_list_entry_unittest.cc

 // Copyright 2016 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/reading_list/ios/reading_list_entry.h"
 
 #include "base/memory/ptr_util.h"
+#include "base/test/ios/wait_util.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "components/reading_list/ios/proto/reading_list.pb.h"
 #include "components/sync/protocol/reading_list_specifics.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 const int kFirstBackoff = 10;
 const int kSecondBackoff = 10;
 const int kThirdBackoff = 60;
 const int kFourthBackoff = 120;
@@ skipping 31 matching lines @@
   EXPECT_FALSE(e.HasBeenSeen());
   EXPECT_FALSE(e.IsRead());
   e.SetRead(false);
   EXPECT_TRUE(e.HasBeenSeen());
   EXPECT_FALSE(e.IsRead());
   e.SetRead(true);
   EXPECT_TRUE(e.HasBeenSeen());
   EXPECT_TRUE(e.IsRead());
 }
 
+TEST(ReadingListEntry, UpdateTitle) {
+  ReadingListEntry e(GURL("http://example.com"), "bar");
+  ASSERT_EQ("bar", e.Title());
+  ASSERT_EQ(e.CreationTime(), e.UpdateTitleTime());
+
+  base::test::ios::SpinRunLoopWithMinDelay(
+      base::TimeDelta::FromMilliseconds(5));
+  e.SetTitle("foo");
+  EXPECT_GT(e.UpdateTitleTime(), e.CreationTime());
+  EXPECT_EQ("foo", e.Title());
+}
+
 TEST(ReadingListEntry, DistilledPathAndURL) {
   ReadingListEntry e(GURL("http://example.com"), "bar");
 
   EXPECT_TRUE(e.DistilledPath().empty());
 
   const base::FilePath distilled_path("distilled/page.html");
   e.SetDistilledPath(distilled_path);
   EXPECT_EQ(distilled_path, e.DistilledPath());
 }
 
@@ skipping 265 matching lines @@
   EXPECT_EQ(local_entry.Title(), "title2");
   EXPECT_FALSE(local_entry.HasBeenSeen());
   EXPECT_EQ(local_entry.UpdateTime(), sync_update_time_us);
   EXPECT_EQ(local_entry.FailedDownloadCounter(), 1);
   EXPECT_EQ(local_entry.DistilledState(), ReadingListEntry::ERROR);
   base::Time merge_next_call =
       base::Time::Now() + local_entry.TimeUntilNextTry();
   base::TimeDelta delta = merge_next_call - next_call;
   EXPECT_NEAR(delta.InMillisecondsRoundedUp(), 0, 10);
 }