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

chrome/browser/android/bookmarks/bookmarks_bridge.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/bookmarks/bookmarks_bridge.h"
 
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/containers/stack_container.h"
 #include "base/i18n/string_compare.h"
@@ skipping 213 matching lines @@
 
   if (get_special) {
     if (client_->managed_node() &&
         client_->managed_node()->child_count() > 0) {
       top_level_folders.push_back(client_->managed_node());
     }
     if (client_->supervised_node() &&
         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());
     }
   }
   std::size_t special_count = top_level_folders.size();
 
   if (get_normal) {
     DCHECK_EQ(bookmark_model_->root_node()->child_count(), 5);
 
     const BookmarkNode* mobile_node = bookmark_model_->mobile_node();
@@ skipping 788 matching lines @@
   BookmarkModelChanged();
 }
 
 void BookmarksBridge::PartnerShimLoaded(PartnerBookmarksShim* shim) {
   NotifyIfDoneLoading();
 }
 
 void BookmarksBridge::ShimBeingDeleted(PartnerBookmarksShim* shim) {
   partner_bookmarks_shim_ = NULL;
 }