Allow manifest handlers to declare keys they depend on that must be parsed before them.

chrome/browser/extensions/api/file_handlers/file_handlers_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/file_handlers/file_handlers_api.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/common/extensions/api/file_handlers/file_handlers_parser.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 
 namespace extensions {
 
 FileHandlersAPI::FileHandlersAPI(Profile* profile) {
   ManifestHandler::Register(extension_manifest_keys::kFileHandlers,
-                            new FileHandlersParser);
+                            make_linked_ptr(new FileHandlersParser));
 }
 
 FileHandlersAPI::~FileHandlersAPI() {
 }
 
 static base::LazyInstance<ProfileKeyedAPIFactory<FileHandlersAPI> >
 g_factory = LAZY_INSTANCE_INITIALIZER;
 
 ProfileKeyedAPIFactory<FileHandlersAPI>* FileHandlersAPI::GetFactoryInstance() {
   return &g_factory.Get();
 }
 
 }  // namespace extensions