Rewrite simple uses of base::ListValue::Append() taking a raw pointer var.

chrome/browser/extensions/api/media_galleries/media_galleries_api.cc

 // Copyright (c) 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.
 
 // Implements the Chrome Extensions Media Galleries API.
 
 #include "chrome/browser/extensions/api/media_galleries/media_galleries_api.h"
 
 #include <stddef.h>
 
@@ skipping 693 matching lines @@
   DCHECK_LT(blob_uuids->size(), attached_images->size());
 
   // For the newly constructed Blob, store its image's metadata and Blob UUID.
   base::ListValue* attached_images_list = NULL;
   result_dictionary->GetList(kAttachedImagesBlobInfoKey, &attached_images_list);
   DCHECK(attached_images_list);
   DCHECK_LT(attached_images_list->GetSize(), attached_images->size());
 
   metadata::AttachedImage* current_image =
       &(*attached_images)[blob_uuids->size()];
-  base::DictionaryValue* attached_image = new base::DictionaryValue;
+  std::unique_ptr<base::DictionaryValue> attached_image(
+      new base::DictionaryValue);
   attached_image->Set(kBlobUUIDKey, new base::StringValue(
       current_blob->GetUUID()));
   attached_image->Set(kTypeKey, new base::StringValue(
       current_image->type));
   attached_image->Set(kSizeKey, new base::FundamentalValue(
       base::checked_cast<int>(current_image->data.size())));
-  attached_images_list->Append(attached_image);
+  attached_images_list->Append(std::move(attached_image));
 
   blob_uuids->push_back(current_blob->GetUUID());
   extensions::BlobHolder* holder =
       extensions::BlobHolder::FromRenderProcessHost(
           render_frame_host()->GetProcess());
   holder->HoldBlobReference(std::move(current_blob));
 
   // Construct the next Blob if necessary.
   if (blob_uuids->size() < attached_images->size()) {
     metadata::AttachedImage* next_image =
@@ skipping 138 matching lines @@
     SendResponse(false);
     return;
   }
 
   gallery_watch_manager()->RemoveWatch(
       GetProfile(), extension_id(), gallery_pref_id);
   SendResponse(true);
 }
 
 }  // namespace extensions