Switch SupportsUserData uses to use unique_ptr.

chrome/browser/download/download_status_updater_mac.mm

 // Copyright 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/download/download_status_updater.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/mac/sdk_forward_declarations.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/supports_user_data.h"
 #import "chrome/browser/ui/cocoa/dock_icon.h"
 #include "content/public/browser/download_item.h"
 #include "url/gurl.h"
 
 namespace {
 
 // These are not the keys themselves; they are the names for dynamic lookup via
 // the ProgressString() function.
@@ skipping 134 matching lines @@
       dispatch_async(dispatch_get_main_queue(), ^{
           download->Cancel(true);
       });
   }];
 
   progress.totalUnitCount = download->GetTotalBytes();
   progress.completedUnitCount = download->GetReceivedBytes();
 
   [progress publish];
 
-  download->SetUserData(&kCrNSProgressUserDataKey,
-                        new CrNSProgressUserData(progress, destination_path));
+  download->SetUserData(
+      &kCrNSProgressUserDataKey,
+      base::MakeUnique<CrNSProgressUserData>(progress, destination_path));
 }
 
 void UpdateNSProgress(content::DownloadItem* download,
                       CrNSProgressUserData* progress_data) {
   NSProgress* progress = progress_data->progress();
   progress.totalUnitCount = download->GetTotalBytes();
   progress.completedUnitCount = download->GetReceivedBytes();
   [progress setUserInfoObject:@(download->CurrentSpeed())
                        forKey:ProgressString(kNSProgressThroughputKeyName)];
 
@@ skipping 62 matching lines @@
       // Bounce the dock icon.
       [[NSDistributedNotificationCenter defaultCenter]
           postNotificationName:@"com.apple.DownloadFileFinished"
                         object:download_path];
     }
 
     // Notify the Finder.
     [[NSWorkspace sharedWorkspace] noteFileSystemChanged:download_path];
   }
 }