BookmarkClient can add extra nodes to BookmarkModel.

chrome/browser/bookmarks/bookmark_model_factory.cc

Index: chrome/browser/bookmarks/bookmark_model_factory.cc
diff --git a/chrome/browser/bookmarks/bookmark_model_factory.cc b/chrome/browser/bookmarks/bookmark_model_factory.cc
index 6000d8039cce6a00fe5f529ecda03d5fff10bf9c..9c6757f11a9f853bcea1f4baa7539f5cf0bea2a4 100644
--- a/chrome/browser/bookmarks/bookmark_model_factory.cc
+++ b/chrome/browser/bookmarks/bookmark_model_factory.cc
@@ -27,11 +27,12 @@
 
 // static
 BookmarkModel* BookmarkModelFactory::GetForProfile(Profile* profile) {
-  ChromeBookmarkClient* bookmark_client = static_cast<ChromeBookmarkClient*>(
-      GetInstance()->GetServiceForBrowserContext(profile, true));
+  ChromeBookmarkClient* bookmark_client =
+      GetChromeBookmarkClientForProfile(profile);
   return bookmark_client ? bookmark_client->model() : NULL;
 }
 
+// static
 BookmarkModel* BookmarkModelFactory::GetForProfileIfExists(Profile* profile) {
   ChromeBookmarkClient* bookmark_client = static_cast<ChromeBookmarkClient*>(
       GetInstance()->GetServiceForBrowserContext(profile, false));
@@ -39,6 +40,13 @@ BookmarkModel* BookmarkModelFactory::GetForProfileIfExists(Profile* profile) {
 }
 
 // static
+ChromeBookmarkClient* BookmarkModelFactory::GetChromeBookmarkClientForProfile(
+    Profile* profile) {
+  return static_cast<ChromeBookmarkClient*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}
+
+// static
 BookmarkModelFactory* BookmarkModelFactory::GetInstance() {
   return Singleton<BookmarkModelFactory>::get();
 }