AU: Use Omaha ID rather than MAC address in delta updater

src/platform/update_engine/integration_unittest.cc

 // Copyright (c) 2009 The Chromium OS 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 <string>
 #include <vector>
 #include <glib.h>
 #include <pthread.h>
 #include <gtest/gtest.h>
 #include "update_engine/download_action.h"
@@ skipping 115 matching lines @@
   BondActions(&update_check_action, &response_handler_action);
   BondActions(&response_handler_action, &download_action);
   BondActions(&download_action, &install_action);
   BondActions(&install_action, &postinstall_runner_action);
   BondActions(&postinstall_runner_action, &set_bootable_flag_action);
 
   // Set up filesystem to trick some of the actions
   ASSERT_EQ(0, System(string("rm -rf ") + kTestDir));
   ASSERT_EQ(0, system("rm -f /tmp/update_engine_test_postinst_out.txt"));
   ASSERT_EQ(0, System(string("mkdir -p ") + kTestDir + "/etc"));
+  ASSERT_EQ(0, system((string("mkdir -p ") + kTestDir +
+                       utils::kStatefulPartition +
+                       "/etc").c_str()));
   ASSERT_TRUE(WriteFileString(string(kTestDir) + "/etc/lsb-release",
                               "GOOGLE_RELEASE=0.2.0.0\n"
                               "GOOGLE_TRACK=unittest-track"));
   ASSERT_EQ(0, System(string("touch ") + kTestDir + "/dev1"));
   ASSERT_EQ(0, System(string("touch ") + kTestDir + "/dev2"));
   ASSERT_TRUE(WriteFileVector(string(kTestDir) + "/dev", GenerateSampleMbr()));
 
   request_prep_action.set_root(kTestDir);
   response_handler_action.set_boot_device(string(kTestDir) + "/dev1");
 
@@ skipping 34 matching lines @@
       "/tmp/update_engine_test_postinst_out.txt",
       &file_data));
   EXPECT_EQ("POSTINST_DONE\n", file_data);
 
   // cleanup
   ASSERT_EQ(0, System(string("rm -rf ") + kTestDir));
   ASSERT_EQ(0, system("rm -f /tmp/update_engine_test_postinst_out.txt"));
 }
 
 }  // namespace chromeos_update_engine