[Pepper] Handle plugin crash on QuotaReservation

content/browser/renderer_host/pepper/quota_reservation.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 CONTENT_BROWSER_RENDERER_HOST_PEPPER_QUOTA_RESERVATION_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_QUOTA_RESERVATION_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 37 matching lines @@
   // Closes the file opened by OpenFile with the given id.
   void CloseFile(int32_t id, int64_t max_written_offset);
   // Refreshes the quota reservation to a new amount. A map that associates file
   // ids with maximum written offsets is provided as input. The callback will
   // receive a similar map with the updated file sizes.
   typedef std::map<int32_t, int64_t> OffsetMap;
   typedef base::Callback<void(int64_t, const OffsetMap&)> ReserveQuotaCallback;
   void ReserveQuota(int64_t amount,
                     const OffsetMap& max_written_offsets,
                     const ReserveQuotaCallback& callback);
+
+  // Notifies underlying QuotaReservation that the associated client crashed,
+  // and that the reserved quota is no longer traceable.
+  void OnClientCrash();
+
  private:
   friend class base::RefCountedThreadSafe<QuotaReservation,
                                           QuotaReservationDeleter>;
   friend class base::DeleteHelper<QuotaReservation>;
   friend struct QuotaReservationDeleter;
   friend class QuotaReservationTest;
 
   QuotaReservation(
       scoped_refptr<fileapi::FileSystemContext> file_system_context,
       const GURL& origin_url,
@@ skipping 23 matching lines @@
 
 struct QuotaReservationDeleter {
   static void Destruct(const QuotaReservation* quota_reservation) {
     quota_reservation->DeleteOnCorrectThread();
   }
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_QUOTA_RESERVATION_H_