Fix "undefined reference to '__atomic_is_lock_free'" errors with gyp

base/base.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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 122 matching lines @@
                 'NO_TCMALLOC',
               ],
               'direct_dependent_settings': {
                 'defines': [
                   'NO_TCMALLOC',
                 ],
               },
             }],
           ],
         }],
-        ['use_sysroot==0 and (OS == "android" or OS == "linux")', {
+        ['OS == "android" or OS == "linux"', {
           'link_settings': {
             'libraries': [
               # Needed for <atomic> when building with newer C++ library.
               '-latomic',
             ],
           },
         }],
         ['OS == "win"', {
           # Specify delayload for base.dll.
           'msvs_settings': {
@@ skipping 1560 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'base_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }