Made the bookmarks extension APIs aware of managed bookmarks.

components/bookmarks/browser/bookmark_utils.cc

Index: components/bookmarks/browser/bookmark_utils.cc
diff --git a/components/bookmarks/browser/bookmark_utils.cc b/components/bookmarks/browser/bookmark_utils.cc
index bff1d49a681a474e32ebd9c4db61105058419a8c..2a7dc34196621fc0b602c21a11b90da415dceb67 100644
--- a/components/bookmarks/browser/bookmark_utils.cc
+++ b/components/bookmarks/browser/bookmark_utils.cc
@@ -415,6 +415,15 @@ base::string16 CleanUpTitleForMatching(const base::string16& title) {
   return base::i18n::ToLower(title.substr(0u, kCleanedUpTitleMaxLength));
 }
 
+bool HasManaged(BookmarkModel* model,
+                const std::vector<const BookmarkNode*>& list) {
+  for (size_t i = 0; i < list.size(); ++i) {
+    if (model->IsManaged(list[i]))
+      return true;
+  }
+  return false;
+}
+
 }  // namespace bookmark_utils
 
 const BookmarkNode* GetBookmarkNodeByID(const BookmarkModel* model, int64 id) {