Switch SupportsUserData uses to use unique_ptr.

chrome/browser/ui/tab_helpers.cc

 // Copyright 2014 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/ui/tab_helpers.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
+#include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/mixed_content_settings_tab_helper.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/data_use_measurement/data_use_web_contents_observer.h"
 #include "chrome/browser/engagement/site_engagement_helper.h"
 #include "chrome/browser/engagement/site_engagement_service.h"
 #include "chrome/browser/external_protocol/external_protocol_observer.h"
 #include "chrome/browser/favicon/favicon_utils.h"
@@ skipping 110 matching lines @@
 // static
 void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
   // If already adopted, nothing to be done.
   base::SupportsUserData::Data* adoption_tag =
       web_contents->GetUserData(&kTabContentsAttachedTabHelpersUserDataKey);
   if (adoption_tag)
     return;
 
   // Mark as adopted.
   web_contents->SetUserData(&kTabContentsAttachedTabHelpersUserDataKey,
-                            new base::SupportsUserData::Data());
+                            base::MakeUnique<base::SupportsUserData::Data>());
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
   // Set the view type.
   extensions::SetViewType(web_contents, extensions::VIEW_TYPE_TAB_CONTENTS);
 #endif
 
   // Create all the tab helpers.
 
   // SessionTabHelper comes first because it sets up the tab ID, and other
   // helpers may rely on that.
@@ skipping 142 matching lines @@
 
   if (predictors::ResourcePrefetchPredictorFactory::GetForProfile(
       web_contents->GetBrowserContext())) {
     predictors::ResourcePrefetchPredictorTabHelper::CreateForWebContents(
         web_contents);
   }
 
   if (tracing::NavigationTracingObserver::IsEnabled())
     tracing::NavigationTracingObserver::CreateForWebContents(web_contents);
 }