FetchMore functionality backend

components/ntp_snippets/remote/ntp_snippets_fetcher_unittest.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/ntp_snippets/remote/ntp_snippets_fetcher.h"
 
 #include <map>
 #include <utility>
 
 #include "base/json/json_reader.h"
@@ skipping 157 matching lines @@
     user_classifier_ = base::MakeUnique<UserClassifier>(pref_service_.get());
 
     snippets_fetcher_ = base::MakeUnique<NTPSnippetsFetcher>(
         fake_signin_manager_.get(), fake_token_service_.get(),
         scoped_refptr<net::TestURLRequestContextGetter>(
             new net::TestURLRequestContextGetter(mock_task_runner_.get())),
         pref_service_.get(), &category_factory_, nullptr,
         base::Bind(&ParseJsonDelayed), kAPIKey, user_classifier_.get());
 
     snippets_fetcher_->SetCallback(
-        base::Bind(&MockSnippetsAvailableCallback::WrappedRun,
-                   base::Unretained(&mock_callback_)));
+        base::BindOnce(&MockSnippetsAvailableCallback::WrappedRun,
+                       base::Unretained(&mock_callback_)));
     snippets_fetcher_->SetTickClockForTesting(
         mock_task_runner_->GetMockTickClock());
     test_excluded_.insert("1234567890");
     // Increase initial time such that ticks are non-zero.
     mock_task_runner_->FastForwardBy(base::TimeDelta::FromMilliseconds(1234));
   }
 
   NTPSnippetsFetcher& snippets_fetcher() { return *snippets_fetcher_; }
   MockSnippetsAvailableCallback& mock_callback() { return mock_callback_; }
   void FastForwardUntilNoTasksRemain() {
@@ skipping 692 matching lines @@
     const NTPSnippetsFetcher::OptionalFetchedCategories& fetched_categories) {
   if (fetched_categories) {
     // Matchers above aren't any more precise than this, so this is sufficient
     // for test-failure diagnostics.
     return os << "list with " << fetched_categories->size() << " elements";
   }
   return os << "null";
 }
 
 }  // namespace ntp_snippets