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

chromeos/dbus/fake_cryptohome_client.cc

 // 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.
 
 #include "chromeos/dbus/fake_cryptohome_client.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 98 matching lines @@
     const cryptohome::Identification& account_id,
     const ProtobufMethodCallback& callback) {
   cryptohome::BaseReply reply;
   cryptohome::GetAccountDiskUsageReply* get_account_disk_usage_reply =
       reply.MutableExtension(cryptohome::GetAccountDiskUsageReply::reply);
   // Sets 100 MB as a fake usage.
   get_account_disk_usage_reply->set_size(100 * 1024 * 1024);
   ReturnProtobufMethodCallback(reply, callback);
 }
 
+void FakeCryptohomeClient::GetFreeDiskSpace(
+    const GetFreeDiskSpaceCallback& callback) {
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE,
+      base::Bind(callback, DBUS_METHOD_CALL_SUCCESS, 100 * 1024 * 1024));
+}
+
 void FakeCryptohomeClient::GetSystemSalt(
     const GetSystemSaltCallback& callback) {
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(callback, DBUS_METHOD_CALL_SUCCESS, system_salt_));
 }
 
 void FakeCryptohomeClient::GetSanitizedUsername(
     const cryptohome::Identification& cryptohome_id,
     const StringDBusMethodCallback& callback) {
   // Even for stub implementation we have to return different values so that
@@ skipping 477 matching lines @@
                               cryptohome::MOUNT_ERROR_NONE));
   } else if (returns_data && !async_call_status_data_handler_.is_null()) {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(async_call_status_data_handler_, async_call_id_,
                               true, std::string()));
   }
   ++async_call_id_;
 }
 
 }  // namespace chromeos