[Android] Hide partner bookmark node if it's deleted.

chrome/browser/android/bookmarks/bookmarks_bridge.cc

Index: chrome/browser/android/bookmarks/bookmarks_bridge.cc
diff --git a/chrome/browser/android/bookmarks/bookmarks_bridge.cc b/chrome/browser/android/bookmarks/bookmarks_bridge.cc
index dabdc7a1b2e39c78f589cdfccd866a7b206a0344..1ea35d0c2d377733b3e7a830803a0947a41bef06 100644
--- a/chrome/browser/android/bookmarks/bookmarks_bridge.cc
+++ b/chrome/browser/android/bookmarks/bookmarks_bridge.cc
@@ -231,7 +231,8 @@ void BookmarksBridge::GetTopLevelFolderIDs(JNIEnv* env,
         client_->supervised_node()->child_count() > 0) {
       top_level_folders.push_back(client_->supervised_node());
     }
-    if (partner_bookmarks_shim_->HasPartnerBookmarks()) {
+    if (partner_bookmarks_shim_->HasPartnerBookmarks()
+        && IsReachable(partner_bookmarks_shim_->GetPartnerBookmarksRoot())) {
       top_level_folders.push_back(
           partner_bookmarks_shim_->GetPartnerBookmarksRoot());
     }