Add new E2E sync multi profiles tests. This should not affect any existing

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

Index: chrome/browser/sync/test/integration/bookmarks_helper.cc
diff --git a/chrome/browser/sync/test/integration/bookmarks_helper.cc b/chrome/browser/sync/test/integration/bookmarks_helper.cc
index 1e665d6cde93e3f0bbf553d85002afc50994c56e..e5551d5d87aadf825c74860a98c2aab627a30600 100644
--- a/chrome/browser/sync/test/integration/bookmarks_helper.cc
+++ b/chrome/browser/sync/test/integration/bookmarks_helper.cc
@@ -150,6 +150,20 @@ int CountNodesWithTitlesMatching(BookmarkModel* model,
   return count;
 }
 
+// Returns the number of nodes of node type |node_type| in |model|.
+int CountNodes(BookmarkModel* model, BookmarkNode::Type node_type) {
+  ui::TreeNodeIterator<const BookmarkNode> iterator(model->root_node());
+  // Walk through the model tree looking for bookmark nodes of node type
+  // |node_type|.
+  int count = 0;
+  while (iterator.has_next()) {
+    const BookmarkNode* node = iterator.Next();
+    if (node->type() == node_type)
+      ++count;
+  }
+  return count;
+}
+
 // Checks if the favicon data in |bitmap_a| and |bitmap_b| are equivalent.
 // Returns true if they match.
 bool FaviconRawBitmapsMatch(const SkBitmap& bitmap_a,
@@ -771,6 +785,10 @@ const BookmarkNode* GetUniqueNodeByURL(int profile, const GURL& url) {
   return nodes[0];
 }
 
+int CountAllBookmarks(int profile) {
+  return CountNodes(GetBookmarkModel(profile), BookmarkNode::URL);
+}
+
 int CountBookmarksWithTitlesMatching(int profile, const std::string& title) {
   return CountNodesWithTitlesMatching(GetBookmarkModel(profile),
                                       BookmarkNode::URL,