Fixes a DCHECK in tools_menu_button_observer_bridge during tests

components/reading_list/core/reading_list_model_impl.cc

 // Copyright 2016 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 "components/reading_list/core/reading_list_model_impl.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_util.h"
@@ skipping 39 matching lines @@
   }
   DCHECK(read_entry_count_ + unread_entry_count_ == entries_->size());
   loaded_ = true;
   for (auto& observer : observers_)
     observer.ReadingListModelLoaded(this);
 }
 
 void ReadingListModelImpl::Shutdown() {
   DCHECK(CalledOnValidThread());
   for (auto& observer : observers_)
-    observer.ReadingListModelBeingDeleted(this);
+    observer.ReadingListModelBeingShutdown(this);
   loaded_ = false;
 }
 
 bool ReadingListModelImpl::loaded() const {
   DCHECK(CalledOnValidThread());
   return loaded_;
 }
 
 size_t ReadingListModelImpl::size() const {
   DCHECK(CalledOnValidThread());
@@ skipping 465 matching lines @@
 
 syncer::ModelTypeSyncBridge* ReadingListModelImpl::GetModelTypeSyncBridge() {
   if (!storage_layer_)
     return nullptr;
   return storage_layer_.get();
 }
 
 ReadingListModelStorage* ReadingListModelImpl::StorageLayer() {
   return storage_layer_.get();
 }