Sync: add a test for downloading a tombstoned bookmark

chrome/browser/sync/test/integration/bookmarks_helper.h

Index: chrome/browser/sync/test/integration/bookmarks_helper.h
diff --git a/chrome/browser/sync/test/integration/bookmarks_helper.h b/chrome/browser/sync/test/integration/bookmarks_helper.h
index a22976048822bb281a2637346481d504d9ce992f..01d8275202eb84272365bd781d5afbb92a9d9d90 100644
--- a/chrome/browser/sync/test/integration/bookmarks_helper.h
+++ b/chrome/browser/sync/test/integration/bookmarks_helper.h
@@ -156,6 +156,13 @@ bool AllModelsMatch() WARN_UNUSED_RESULT;
 // while checking.
 bool AwaitAllModelsMatch() WARN_UNUSED_RESULT;
 
+// Blocks the caller until the given |profile| contains |expected_count|
+// bookmarks with |title| or until waiting times out.
+bool AwaitCountBookmarksWithTitlesMatching(int profile,
+                                           const std::string& title,
+                                           int expected_count)
+    WARN_UNUSED_RESULT;
+
 // Checks if the bookmark model of profile |profile| contains any instances of
 // two bookmarks with the same URL under the same parent folder. Returns true
 // if even one instance is found.