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diff --git a/chrome/browser/printing/print_job_manager.h b/chrome/browser/printing/print_job_manager.h
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+++ b/chrome/browser/printing/print_job_manager.h
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+// Copyright (c) 2006-2008 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_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
+#define CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/lock.h"
+#include "base/ref_counted.h"
+#include "chrome/common/notification_registrar.h"
+
+namespace printing {
+
+class JobEventDetails;
+class PrintedDocument;
+class PrintJob;
+class PrintedPage;
+class PrinterQuery;
+
+class PrintJobManager : public NotificationObserver {
+ public:
+  PrintJobManager();
+  ~PrintJobManager();
+
+  // On browser quit, we should wait to have the print job finished.
+  void OnQuit();
+
+  // Queues a semi-initialized worker thread. Can be called from any thread.
+  // Current use case is queuing from the I/O thread.
+  // TODO(maruel):  Have them vanish after a timeout (~5 minutes?)
+  void QueuePrinterQuery(PrinterQuery* job);
+
+  // Pops a queued PrintJobWorkerOwner object that was previously queued. Can be
+  // called from any thread. Current use case is poping from the browser thread.
+  void PopPrinterQuery(int document_cookie, scoped_refptr<PrinterQuery>* job);
+
+  // NotificationObserver
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+ private:
+  typedef std::vector<scoped_refptr<PrintJob> > PrintJobs;
+  typedef std::vector<scoped_refptr<PrinterQuery> > PrinterQueries;
+
+  // Processes a NOTIFY_PRINT_JOB_EVENT notification.
+  void OnPrintJobEvent(PrintJob* print_job,
+                       const JobEventDetails& event_details);
+
+  NotificationRegistrar registrar_;
+
+  // Used to serialize access to queued_workers_.
+  Lock lock_;
+
+  PrinterQueries queued_queries_;
+
+  // Current print jobs that are active.
+  PrintJobs current_jobs_;
+
+  DISALLOW_COPY_AND_ASSIGN(PrintJobManager);
+};
+
+}  // namespace printing
+
+#endif  // CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_