Update SupportsUserData uses with unique_ptr.

chrome/browser/ntp_snippets/bookmark_last_visit_updater.cc

 // Copyright 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/ntp_snippets/bookmark_last_visit_updater.h"
 
+#include "base/memory/ptr_util.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/bookmark_node.h"
 #include "components/ntp_snippets/bookmarks/bookmark_last_visit_utils.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_handle.h"
 
 namespace {
 
 bool IsMobilePlatform() {
 #if defined(OS_ANDROID)  // There are no tab helpers on iOS.
@@ skipping 14 matching lines @@
 // static
 void BookmarkLastVisitUpdater::MaybeCreateForWebContentsWithBookmarkModel(
     content::WebContents* web_contents,
     bookmarks::BookmarkModel* bookmark_model) {
   // Do not create the helper for missing |bookmark_model| (in some unit-tests)
   // or for incognito profiles where tracking bookmark visits is not desired.
   content::BrowserContext* browser_context = web_contents->GetBrowserContext();
   if (!bookmark_model || browser_context->IsOffTheRecord()) {
     return;
   }
-  web_contents->SetUserData(UserDataKey(), new BookmarkLastVisitUpdater(
-                                               web_contents, bookmark_model));
+  web_contents->SetUserData(UserDataKey(),
+                            base::WrapUnique(new BookmarkLastVisitUpdater(
+                                web_contents, bookmark_model)));
 }
 
 BookmarkLastVisitUpdater::BookmarkLastVisitUpdater(
     content::WebContents* web_contents,
     bookmarks::BookmarkModel* bookmark_model)
     : content::WebContentsObserver(web_contents),
       bookmark_model_(bookmark_model),
       web_contents_(web_contents) {
   DCHECK(bookmark_model_);
   bookmark_model_->AddObserver(this);
@@ skipping 28 matching lines @@
     int index) {
   const GURL& new_bookmark_url = parent->GetChild(index)->url();
 
   if (new_bookmark_url == web_contents_->GetLastCommittedURL()) {
     // Consider in this TabHelper only bookmarks created from this tab (and not
     // the ones created from other tabs or created through bookmark sync).
     ntp_snippets::UpdateBookmarkOnURLVisitedInMainFrame(
         bookmark_model_, new_bookmark_url, IsMobilePlatform());
   }
 }