Enable NTPTilesInInstantService by default

chrome/browser/safe_browsing/threat_details_unittest.cc

 // Copyright (c) 2012 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 <stdint.h>
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/macros.h"
@@ skipping 189 matching lines @@
   typedef SafeBrowsingUIManager::UnsafeResource UnsafeResource;
 
   ThreatDetailsTest() : ui_manager_(new MockSafeBrowsingUIManager()) {}
 
   void SetUp() override {
     ChromeRenderViewHostTestHarness::SetUp();
     ASSERT_TRUE(profile()->CreateHistoryService(true /* delete_file */,
                                                 false /* no_db */));
   }
 
-  void TearDown() override {
-    profile()->DestroyHistoryService();
-    ChromeRenderViewHostTestHarness::TearDown();
-  }
-
   static bool ResourceLessThan(
       const ClientSafeBrowsingReportRequest::Resource* lhs,
       const ClientSafeBrowsingReportRequest::Resource* rhs) {
     return lhs->id() < rhs->id();
   }
 
   std::string WaitForSerializedReport(ThreatDetails* report,
                                       bool did_proceed,
                                       int num_visit) {
     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
@@ skipping 754 matching lines @@
   pb_resource->set_parent_id(3);
   pb_resource->set_url(kSecondRedirectURL);
   pb_resource = expected.add_resources();
   pb_resource->set_id(3);
   pb_resource->set_url(kFirstRedirectURL);
 
   VerifyResults(actual, expected);
 }
 
 }  // namespace safe_browsing