Update from https://crrev.com/315085

sandbox/linux/services/credentials_unittest.cc

 // Copyright (c) 2012 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 "sandbox/linux/services/credentials.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
@@ skipping 105 matching lines @@
   CHECK(Credentials::DropAllCapabilities());
   // As of 3.12, the kernel has a limit of 32. See create_user_ns().
   const int kNestLevel = 10;
   for (int i = 0; i < kNestLevel; ++i) {
     CHECK(NewUserNSCycle()) << "Creating new user NS failed at iteration "
                                   << i << ".";
   }
 }
 
 // Test the WorkingDirectoryIsRoot() helper.
-TEST(Credentials, CanDetectRoot) {
-  ASSERT_EQ(0, chdir("/proc/"));
-  ASSERT_FALSE(WorkingDirectoryIsRoot());
-  ASSERT_EQ(0, chdir("/"));
-  ASSERT_TRUE(WorkingDirectoryIsRoot());
+SANDBOX_TEST(Credentials, CanDetectRoot) {
+  PCHECK(0 == chdir("/proc/"));
+  CHECK(!WorkingDirectoryIsRoot());
+  PCHECK(0 == chdir("/"));
+  CHECK(WorkingDirectoryIsRoot());
 }
 
 // Disabled on ASAN because of crbug.com/451603.
 SANDBOX_TEST(Credentials, DISABLE_ON_ASAN(DropFileSystemAccessIsSafe)) {
   CHECK(Credentials::DropAllCapabilities());
   // Probably missing kernel support.
   if (!Credentials::MoveToNewUserNS()) return;
   CHECK(Credentials::DropFileSystemAccess());
   CHECK(!base::DirectoryExists(base::FilePath("/proc")));
   CHECK(WorkingDirectoryIsRoot());
@@ skipping 14 matching lines @@
 
   // The kernel should now prevent us from regaining capabilities because we
   // are in a chroot.
   CHECK(!Credentials::CanCreateProcessInNewUserNS());
   CHECK(!Credentials::MoveToNewUserNS());
 }
 
 }  // namespace.
 
 }  // namespace sandbox.