Move storage-related files from webkit/ to new top-level directory storage/

webkit/browser/fileapi/quota/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 WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_H_
-#define WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_H_
-
-#include "base/basictypes.h"
-#include "base/files/file.h"
-#include "base/files/file_path.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "webkit/browser/fileapi/quota/quota_reservation_manager.h"
-#include "webkit/browser/webkit_storage_browser_export.h"
-#include "webkit/common/fileapi/file_system_types.h"
-
-class GURL;
-
-namespace fileapi {
-
-class QuotaReservationBuffer;
-class OpenFileHandle;
-
-// Represents a unit of quota reservation.
-class WEBKIT_STORAGE_BROWSER_EXPORT QuotaReservation
-    : public base::RefCounted<QuotaReservation> {
- public:
-  typedef base::Callback<void(base::File::Error error)> StatusCallback;
-
-  // Reclaims unused quota and reserves another |size| of quota.  So that the
-  // resulting new |remaining_quota_| will be same as |size| as far as available
-  // space is enough.  |remaining_quota_| may be less than |size| if there is
-  // not enough space available.
-  // Invokes |callback| upon completion.
-  void RefreshReservation(int64 size, const StatusCallback& callback);
-
-  // Associates |platform_path| to the QuotaReservation instance.
-  // Returns an OpenFileHandle instance that represents a quota managed file.
-  scoped_ptr<OpenFileHandle> GetOpenFileHandle(
-      const base::FilePath& platform_path);
-
-  // Should be called when the associated client is crashed.
-  // This implies the client can no longer report its consumption of the
-  // reserved quota.
-  // QuotaReservation puts all remaining quota to the QuotaReservationBuffer, so
-  // that the remaining quota will be reclaimed after all open files associated
-  // to the origin and type.
-  void OnClientCrash();
-
-  // Consumes |size| of reserved quota for a associated file.
-  // Consumed quota is sent to associated QuotaReservationBuffer for staging.
-  void ConsumeReservation(int64 size);
-
-  // Returns amount of unused reserved quota.
-  int64 remaining_quota() const { return remaining_quota_; }
-
-  QuotaReservationManager* reservation_manager();
-  const GURL& origin() const;
-  FileSystemType type() const;
-
- private:
-  friend class QuotaReservationBuffer;
-
-  // Use QuotaReservationManager as the entry point.
-  explicit QuotaReservation(QuotaReservationBuffer* reservation_buffer);
-
-  friend class base::RefCounted<QuotaReservation>;
-  virtual ~QuotaReservation();
-
-  static bool AdaptDidUpdateReservedQuota(
-      const base::WeakPtr<QuotaReservation>& reservation,
-      int64 previous_size,
-      const StatusCallback& callback,
-      base::File::Error error,
-      int64 delta);
-  bool DidUpdateReservedQuota(int64 previous_size,
-                              const StatusCallback& callback,
-                              base::File::Error error,
-                              int64 delta);
-
-  bool client_crashed_;
-  bool running_refresh_request_;
-  int64 remaining_quota_;
-
-  scoped_refptr<QuotaReservationBuffer> reservation_buffer_;
-
-  base::SequenceChecker sequence_checker_;
-  base::WeakPtrFactory<QuotaReservation> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(QuotaReservation);
-};
-
-}  // namespace fileapi
-
-#endif  // WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_RESERVATION_H_