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

chrome/browser/extensions/api/content_settings/content_settings_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.
 
 #include "chrome/browser/extensions/api/content_settings/content_settings_api.h"
 
 #include <memory>
 #include <set>
+#include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/content_settings/cookie_settings_factory.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/extensions/api/content_settings/content_settings_api_constants.h"
 #include "chrome/browser/extensions/api/content_settings/content_settings_helpers.h"
@@ skipping 290 matching lines @@
   std::unique_ptr<base::ListValue> list(new base::ListValue());
   for (std::vector<content::WebPluginInfo>::const_iterator it = plugins.begin();
        it != plugins.end(); ++it) {
     std::unique_ptr<PluginMetadata> plugin_metadata(
         finder->GetPluginMetadata(*it));
     const std::string& group_identifier = plugin_metadata->identifier();
     if (group_identifiers.find(group_identifier) != group_identifiers.end())
       continue;
 
     group_identifiers.insert(group_identifier);
-    base::DictionaryValue* dict = new base::DictionaryValue();
+    std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
     dict->SetString(keys::kIdKey, group_identifier);
     dict->SetString(keys::kDescriptionKey, plugin_metadata->name());
-    list->Append(dict);
+    list->Append(std::move(dict));
   }
   SetResult(std::move(list));
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE, base::Bind(
           &ContentSettingsContentSettingGetResourceIdentifiersFunction::
           SendResponse,
           this,
           true));
 }
 
 }  // namespace extensions