Remove ListValue::Append(new {Fundamental,String}Value(...)) pattern in //chrome

chrome/browser/background/background_application_list_model_unittest.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.
 
 // TODO(rickcam): Bug 73183: Add unit tests for image loading
 
 #include "chrome/browser/background/background_application_list_model.h"
 
 #include <stddef.h>
 
@@ skipping 65 matching lines @@
 // |background_permission| is true.
 static scoped_refptr<Extension> CreateExtension(
     const std::string& name,
     bool background_permission) {
   base::DictionaryValue manifest;
   manifest.SetString(extensions::manifest_keys::kVersion, "1.0.0.0");
   manifest.SetString(extensions::manifest_keys::kName, name);
   base::ListValue* permissions = new base::ListValue();
   manifest.Set(extensions::manifest_keys::kPermissions, permissions);
   if (background_permission) {
-    permissions->Append(new base::StringValue("background"));
+    permissions->AppendString("background");
   }
 
   std::string error;
   scoped_refptr<Extension> extension;
 
   extension = Extension::Create(
       bogus_file_pathname(name),
       extensions::Manifest::INVALID_LOCATION,
       manifest,
       Extension::NO_FLAGS,
@@ skipping 298 matching lines @@
       case 2:
         TogglePermission(service(), &extensions, model.get(), &expected,
                          &count);
         break;
       default:
         NOTREACHED();
         break;
     }
   }
 }