[Sync] Make SMTP always have the dump stack function.

components/reading_list/ios/reading_list_model_unittest.mm

 // 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/ios/reading_list_model.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #import "base/test/ios/wait_util.h"
 #include "components/reading_list/ios/reading_list_model_impl.h"
@@ skipping 11 matching lines @@
 class TestReadingListStorageObserver {
  public:
   virtual void ReadingListDidSaveEntry() = 0;
   virtual void ReadingListDidRemoveEntry() = 0;
 };
 
 class TestReadingListStorage : public ReadingListModelStorage {
  public:
   TestReadingListStorage(TestReadingListStorageObserver* observer)
       : ReadingListModelStorage(
-            base::Bind(&syncer::ModelTypeChangeProcessor::Create),
+            base::Bind(&syncer::ModelTypeChangeProcessor::Create,
+                       base::RepeatingClosure()),
             syncer::READING_LIST),
         entries_(new ReadingListStoreDelegate::ReadingListEntries()),
         observer_(observer) {}
 
   void AddSampleEntries() {
     // Adds timer and interlace read/unread entry creation to avoid having two
     // entries with the same creation timestamp.
     ReadingListEntry unread_a(GURL("http://unread_a.com"), "unread_a");
     entries_->insert(
         std::make_pair(GURL("http://unread_a.com"), std::move(unread_a)));
@@ skipping 606 matching lines @@
 }
 
 // Tests that ReadingListModel calls CallbackModelBeingDeleted when destroyed.
 TEST_F(ReadingListModelTest, CallbackModelBeingDeleted) {
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
   model_.reset();
   AssertObserverCount(1, 0, 0, 1, 0, 0, 0, 0, 0);
 }
 
 }  // namespace