Switch SupportsUserData uses to use unique_ptr.

chrome/browser/safe_browsing/safe_browsing_navigation_observer.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/safe_browsing/safe_browsing_navigation_observer.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 61 matching lines @@
 // static
 void SafeBrowsingNavigationObserver::MaybeCreateForWebContents(
     content::WebContents* web_contents) {
   if (FromWebContents(web_contents))
     return;
 
   if (safe_browsing::SafeBrowsingNavigationObserverManager::IsEnabledAndReady(
         Profile::FromBrowserContext(web_contents->GetBrowserContext()))) {
     web_contents->SetUserData(
         kWebContentsUserDataKey,
-        new SafeBrowsingNavigationObserver(
-            web_contents,
-            g_browser_process->safe_browsing_service()
-                ->navigation_observer_manager()));
+        base::MakeUnique<SafeBrowsingNavigationObserver>(
+            web_contents, g_browser_process->safe_browsing_service()
+                              ->navigation_observer_manager()));
   }
 }
 
 // static
 SafeBrowsingNavigationObserver* SafeBrowsingNavigationObserver::FromWebContents(
     content::WebContents* web_contents) {
   return static_cast<SafeBrowsingNavigationObserver*>(
       web_contents->GetUserData(kWebContentsUserDataKey));
 }
 
@@ skipping 153 matching lines @@
     ui::PageTransition transition,
     bool started_from_context_menu,
     bool renderer_initiated) {
   manager_->RecordNewWebContents(
       web_contents(), source_render_frame_host->GetProcess()->GetID(),
       source_render_frame_host->GetRoutingID(), url, new_contents,
       renderer_initiated);
 }
 
 }  // namespace safe_browsing