Convert FieldTrialList to Accept a std::unique_ptr

chrome/browser/chrome_content_browser_client_unittest.cc

 // Copyright 2013 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/chrome_content_browser_client.h"
 
 #include <list>
 #include <map>
 #include <memory>
 
@@ skipping 281 matching lines @@
 }
 
 #if !defined(OS_ANDROID)
 namespace content {
 
 class InstantNTPURLRewriteTest : public BrowserWithTestWindowTest {
  protected:
   void SetUp() override {
     BrowserWithTestWindowTest::SetUp();
     field_trial_list_.reset(new base::FieldTrialList(
-        new metrics::SHA1EntropyProvider("42")));
+        base::MakeUnique<metrics::SHA1EntropyProvider>("42")));
   }
 
   void InstallTemplateURLWithNewTabPage(GURL new_tab_page_url) {
     TemplateURLServiceFactory::GetInstance()->SetTestingFactoryAndUse(
         profile(), &TemplateURLServiceFactory::BuildInstanceFor);
     TemplateURLService* template_url_service =
         TemplateURLServiceFactory::GetForProfile(browser()->profile());
     search_test_utils::WaitForTemplateURLServiceToLoad(template_url_service);
 
     TemplateURLData data;
@@ skipping 394 matching lines @@
   client.ClearSiteData(
       profile(), origin, true /* cookies */, false /* storage */,
       true /* cache */,
       base::Bind(
           &ChromeContentBrowserClientClearSiteDataTest::SetClearingFinished,
           base::Unretained(this), true));
   EXPECT_TRUE(IsClearingFinished());
 }
 
 }  // namespace