components/keyed_service/core/service_access_type.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_KEYED_SERVICE_CORE_SERVICE_ACCESS_TYPE_H_
   6 #define COMPONENTS_KEYED_SERVICE_CORE_SERVICE_ACCESS_TYPE_H_
   7
   8 // Some KeyedServices are accessed with the following parameter. This parameter
   9 // defines what the caller plans to do with the service.
  10 //
  11 // The caller is responsible for not performing any operation that would
  12 // result in persistent implicit records while using an OffTheRecord context.
  13 // This flag allows the context to perform an additional check.
  14 //
  15 // It also leaves an opportunity to perform further checks in the future. For
  16 // example an history service that only allow some specific methods could be
  17 // returned.
  18 enum class ServiceAccessType {
  19   // The caller plans to perform a read or write that takes place as a result
  20   // of the user input. Use this flag when the operation can be performed while
  21   // incognito (for example creating a bookmark).
  22   //
  23   // Since EXPLICIT_ACCESS means "as a result of a user action", this request
  24   // always succeeds.
  25   EXPLICIT_ACCESS,
  26
  27   // The caller plans to call a method that will permanently change some data
  28   // in the context, as part of Chrome's implicit data logging. Use this flag
  29   // before performing an operation which is incompatible with the incognito
  30   // mode.
  31   IMPLICIT_ACCESS
  32 };
  33
  34 #endif  // COMPONENTS_KEYED_SERVICE_CORE_SERVICE_ACCESS_TYPE_H_