Quota double-delete fix

webkit/quota/quota_task.h

 // 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.
 
 #ifndef WEBKIT_QUOTA_QUOTA_TASK_H_
 #define WEBKIT_QUOTA_QUOTA_TASK_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 41 matching lines @@
   }
 
  private:
   friend class base::DeleteHelper<QuotaTask>;
   friend class QuotaTaskObserver;
   friend class QuotaThreadTask;
 
   void Abort();
   QuotaTaskObserver* observer_;
   scoped_refptr<base::SingleThreadTaskRunner> original_task_runner_;
+  bool delete_scheduled_;
 };
 
 // For tasks that post tasks to the other thread.
 class QuotaThreadTask : public QuotaTask,
                         public base::RefCountedThreadSafe<QuotaThreadTask> {
  public:
   QuotaThreadTask(QuotaTaskObserver* observer,
                   base::TaskRunner* target_task_runner);
 
  protected:
@@ skipping 35 matching lines @@
 
   void RegisterTask(QuotaTask* task);
   void UnregisterTask(QuotaTask* task);
 
   typedef std::set<QuotaTask*> TaskSet;
   TaskSet running_quota_tasks_;
 };
 }
 
 #endif  // WEBKIT_QUOTA_QUOTA_TASK_H_