Switch SupportsUserData uses to use unique_ptr.

chrome/browser/android/offline_pages/downloads/offline_page_download_bridge.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/android/offline_pages/downloads/offline_page_download_bridge.h"
 
 #include <vector>
 
 #include "base/android/jni_string.h"
 #include "base/bind.h"
@@ skipping 444 matching lines @@
   DownloadUIAdapter* adapter =
       DownloadUIAdapter::FromOfflinePageModel(offline_page_model);
 
   if (!adapter) {
     RequestCoordinator* request_coordinator =
         RequestCoordinatorFactory::GetForBrowserContext(browser_context);
     DCHECK(request_coordinator);
     adapter = new DownloadUIAdapter(
         offline_page_model, request_coordinator,
         base::MakeUnique<DownloadUIAdapterDelegate>(offline_page_model));
-    DownloadUIAdapter::AttachToOfflinePageModel(adapter, offline_page_model);
+    DownloadUIAdapter::AttachToOfflinePageModel(base::WrapUnique(adapter),
+                                                offline_page_model);
   }
 
   return reinterpret_cast<jlong>(
       new OfflinePageDownloadBridge(env, obj, adapter, browser_context));
 }
 
 }  // namespace android
 }  // namespace offline_pages