Adding offline navigations to the previews blacklist

chrome/browser/previews/previews_service_browser_test.cc

+// Copyright (c) 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 "chrome/browser/previews/previews_service.h"
+#include "chrome/browser/previews/previews_service_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "content/public/test/browser_test_utils.h"
+
+typedef InProcessBrowserTest PreviewsServiceBrowserTest;
+
+// Verify that the PreviewsService is initialized for a profile.
+IN_PROC_BROWSER_TEST_F(PreviewsServiceBrowserTest, VerifyInitialization) {
+  PreviewsService* previews_service =
+      PreviewsServiceFactory::GetForProfile(browser()->profile());
+  EXPECT_TRUE(previews_service->previews_ui_service());
+}