[Sync::USS] Adding a simple test for downloading a bookmark

This CL adds a simple integration test for downloading a bookmark.

It's a simpler version of the existing DownloadDeletedBookmark test.

Bug: 516866
Change-Id: I29f54aa2647b6b89e821b7e84faf84292d6f8707
Reviewed-on: https://chromium-review.googlesource.com/1014045
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551392}

chrome/browser/sync/test/integration/single_client_bookmarks_sync_test.cc

@@ -358,6 +358,20 @@ IN_PROC_BROWSER_TEST_F(SingleClientBookmarksSyncTest,
   ASSERT_TRUE(ModelMatchesVerifier(kSingleProfileIndex));
 }
 
+IN_PROC_BROWSER_TEST_F(SingleClientBookmarksSyncTest, DownloadBookmark) {
+  std::string title = "Patrick Star";
+  fake_server::EntityBuilderFactory entity_builder_factory;
+  fake_server::BookmarkEntityBuilder bookmark_builder =
+      entity_builder_factory.NewBookmarkEntityBuilder(title);
+  fake_server_->InjectEntity(bookmark_builder.BuildBookmark(
+      GURL("http://en.wikipedia.org/wiki/Patrick_Star")));
+
+  DisableVerifier();
+  ASSERT_TRUE(SetupSync());
+
+  EXPECT_EQ(1, CountBookmarksWithTitlesMatching(kSingleProfileIndex, title));
+}
+
 IN_PROC_BROWSER_TEST_F(SingleClientBookmarksSyncTest,
                        DownloadDeletedBookmark) {
   std::string title = "Patrick Star";