Fix build with disabled NaCl glibc toolchain.

ppapi/ppapi_untrusted.gyp

 # 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.
 
 # This GYP file defines untrusted (NaCl) targets.  All targets in this
 # file should be conditionally depended upon via 'disable_nacl!=1' to avoid
 # requiring NaCl sources for building.
 
 {
   'includes': [
@@ skipping 62 matching lines @@
         'extra_deps_arm': [
           '<(SHARED_INTERMEDIATE_DIR)/tc_newlib/libarm/libppapi_cpp.a',
           '<(SHARED_INTERMEDIATE_DIR)/tc_newlib/libarm/libppapi.a',
         ],
         'sources': [
           '<@(test_common_source_files)',
           '<@(test_nacl_source_files)',
         ],
       },
       'conditions': [
-        ['target_arch!="arm"', {
+        ['target_arch!="arm" and disable_glibc==0', {
           'variables': {
             'build_glibc': 1,
             # NOTE: Use /lib, not /lib64 here; it is a symbolic link which
             # doesn't work on Windows.
             'libdir_glibc64': '>(nacl_glibc_tc_root)/x86_64-nacl/lib',
             'libdir_glibc32': '>(nacl_glibc_tc_root)/x86_64-nacl/lib32',
             'nacl_objdump': '>(nacl_glibc_tc_root)/bin/x86_64-nacl-objdump',
             'nmf_glibc%': '<(PRODUCT_DIR)/>(nexe_target)_glibc.nmf',
           },
           'actions': [
@@ skipping 15 matching lines @@
               '--stage-dependencies=<(PRODUCT_DIR)',
               '--toolchain=glibc',
             ],
           },
         ],
         }],
       ],
     },
   ],
 }