Enable sandbox in local discovery utility process.

chrome/utility/local_discovery/service_discovery_message_handler.h

 // Copyright 2013 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.
 
 #ifndef CHROME_UTILITY_LOCAL_DISCOVERY_SERVICE_DISCOVERY_MESSAGE_HANDLER_H_
 #define CHROME_UTILITY_LOCAL_DISCOVERY_SERVICE_DISCOVERY_MESSAGE_HANDLER_H_
 
 #include <map>
 
 #include "base/memory/linked_ptr.h"
@@ skipping 10 matching lines @@
 
 // Handles messages related to local discovery inside utility process.
 class ServiceDiscoveryMessageHandler : public chrome::UtilityMessageHandler {
  public:
   ServiceDiscoveryMessageHandler();
   virtual ~ServiceDiscoveryMessageHandler();
 
   // UtilityMessageHandler implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
+  static void PreSandboxStartup();
+
  private:
   typedef std::map<uint64, linked_ptr<ServiceWatcher> > ServiceWatchers;
   typedef std::map<uint64, linked_ptr<ServiceResolver> > ServiceResolvers;
 
   // Lazy initializes ServiceDiscoveryClient.
-  void Initialize();
+  bool Initialize();
 
   // IPC message handlers.
   void OnStartWatcher(uint64 id, const std::string& service_type);
   void OnDiscoverServices(uint64 id, bool force_update);
   void OnDestroyWatcher(uint64 id);
   void OnResolveService(uint64 id, const std::string& service_name);
   void OnDestroyResolver(uint64 id);
 
   // Is called by ServiceWatcher as callback.
   void OnServiceUpdated(uint64 id,
                         ServiceWatcher::UpdateType update,
                         const std::string& name);
 
   // Is called by ServiceResolver as callback.
   void OnServiceResolved(uint64 id,
                          ServiceResolver::RequestStatus status,
                          const ServiceDescription& description);
 
   ServiceWatchers service_watchers_;
   ServiceResolvers service_resolvers_;
 
   scoped_ptr<net::MDnsClient> mdns_client_;
   scoped_ptr<ServiceDiscoveryClient> service_discovery_client_;
 };
 
 }  // namespace local_discovery
 
 #endif  // CHROME_UTILITY_LOCAL_DISCOVERY_SERVICE_DISCOVERY_MESSAGE_HANDLER_H_
+