ozone gbm: whitelist 3 DRM ioctl code for native GpuMemoryBuffer.

sandbox/linux/sandbox_linux.gypi

 # 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.
 
 {
   'variables': {
+    'use_vgem_map%': 0,
     'conditions': [
       ['OS=="linux"', {
         'compile_suid_client': 1,
         'compile_credentials': 1,
         'use_base_test_suite': 1,
       }, {
         'compile_suid_client': 0,
         'compile_credentials': 0,
         'use_base_test_suite': 0,
       }],
@@ skipping 177 matching lines @@
         '../base/base.gyp:base',
         'sandbox_services',
         'seccomp_bpf',
       ],
       'defines': [
         'SANDBOX_IMPLEMENTATION',
       ],
       'include_dirs': [
         '../..',
       ],
+      'conditions': [
+        ['use_vgem_map==1', {
+          'defines': ['USE_VGEM_MAP'],
+        }],
+      ],
     },
     {
       # The setuid sandbox, for Linux
       'target_name': 'chrome_sandbox',
       'type': 'executable',
       'sources': [
         'suid/common/sandbox.h',
         'suid/common/suid_unsafe_environment_variables.h',
         'suid/process_util.h',
         'suid/process_util_linux.c',
@@ skipping 194 matching lines @@
             '../../build/isolate.gypi',
           ],
           'sources': [
             '../sandbox_linux_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }