Enable NTPTilesInInstantService by default

chrome/browser/safe_browsing/browser_feature_extractor_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 "chrome/browser/safe_browsing/browser_feature_extractor.h"
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 79 matching lines @@
     extractor_.reset(
         new BrowserFeatureExtractor(web_contents(), host_.get()));
     num_pending_ = 0;
     browse_info_.reset(new BrowseInfo);
   }
 
   void TearDown() override {
     extractor_.reset();
     host_.reset();
     db_manager_ = NULL;
-    profile()->DestroyHistoryService();
     ChromeRenderViewHostTestHarness::TearDown();
     ASSERT_EQ(0, num_pending_);
   }
 
   history::HistoryService* history_service() {
     return HistoryServiceFactory::GetForProfile(
         profile(), ServiceAccessType::EXPLICIT_ACCESS);
   }
 
   void SetRedirectChain(const std::vector<GURL>& redirect_chain,
@@ skipping 541 matching lines @@
     // First ip is good but all the others are bad.
     EXPECT_CALL(*db_manager_, MatchMalwareIP(ip)).WillOnce(Return(i > 0));
   }
 
   ExtractMalwareFeatures(&request);
   // The number of IP matched url we store is capped at 5 IPs per request.
   EXPECT_EQ(5, request.bad_ip_url_info_size());
 }
 
 }  // namespace safe_browsing