About box auto-update improvements

base/worker_pool_mac.h

+// Copyright (c) 2009 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 BASE_WORKER_POOL_MAC_H_
+#define BASE_WORKER_POOL_MAC_H_
+
+#include "base/worker_pool.h"
+
+#import <Foundation/Foundation.h>
+
+// WorkerPoolObjC provides an Objective-C interface to the same WorkerPool
+// used by the rest of the application.
+@interface WorkerPoolObjC : NSObject
+
+// Returns the underlying NSOperationQueue back end that WorkerPool::PostTask
+// would post tasks to.  This can be used to add NSOperation subclasses
+// directly to the same NSOperationQueue, by calling -[NSOperationQueue
+// addOperation:].  Most Objective-C code wishing to dispatch tasks to the
+// WorkerPool will find it handy to add an operation of type
+// NSInvocationOperation.
++ (NSOperationQueue*)sharedOperationQueue;
+
+@end  // @interface WorkerPoolObjC
+
+#endif  // BASE_WORKER_POOL_MAC_H_