arc: Abort booting ARC if the device is critically low on disk space.

chromeos/dbus/fake_cryptohome_client.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 CHROMEOS_DBUS_FAKE_CRYPTOHOME_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_CRYPTOHOME_CLIENT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 26 matching lines @@
                        const std::string& from_key,
                        const std::string& to_key,
                        const AsyncMethodCallback& callback) override;
   void AsyncRemove(const cryptohome::Identification& cryptohome_id,
                    const AsyncMethodCallback& callback) override;
   void RenameCryptohome(const cryptohome::Identification& cryptohome_id_from,
                         const cryptohome::Identification& cryptohome_id_to,
                         const ProtobufMethodCallback& callback) override;
   void GetAccountDiskUsage(const cryptohome::Identification& account_id,
                            const ProtobufMethodCallback& callback) override;
+  void GetFreeDiskSpace(const GetFreeDiskSpaceCallback& callback) override;
   void GetSystemSalt(const GetSystemSaltCallback& callback) override;
   void GetSanitizedUsername(const cryptohome::Identification& cryptohome_id,
                             const StringDBusMethodCallback& callback) override;
   std::string BlockingGetSanitizedUsername(
       const cryptohome::Identification& cryptohome_id) override;
   void AsyncMount(const cryptohome::Identification& cryptohome_id,
                   const std::string& key,
                   int flags,
                   const AsyncMethodCallback& callback) override;
   void AsyncAddKey(const cryptohome::Identification& cryptohome_id,
@@ skipping 185 matching lines @@
   std::map<std::string, std::vector<uint8_t>> install_attrs_;
   bool locked_;
   base::WeakPtrFactory<FakeCryptohomeClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeCryptohomeClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_CRYPTOHOME_CLIENT_H_