Remove "nacl_defines" from the GYP build.

chrome/chrome_browser_ui.gypi

 # Copyright 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': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 2725 matching lines @@
             '../third_party/mojo/mojo_edk.gyp:mojo_system_impl',
             '../third_party/npapi/npapi.gyp:npapi',
             '../third_party/re2/re2.gyp:re2',
             '../ui/base/ime/ui_base_ime.gyp:ui_base_ime',
             '../ui/compositor/compositor.gyp:compositor',
             '../ui/native_theme/native_theme.gyp:native_theme',
             '../ui/surface/surface.gyp:surface',
             '../ui/web_dialogs/web_dialogs.gyp:web_dialogs',
             '../v8/tools/gyp/v8.gyp:v8',
           ],
-          'defines': [
-            '<@(nacl_defines)',
-          ],
-          'direct_dependent_settings': {
-            'defines': [
-              '<@(nacl_defines)',
-            ],
-          },
         }, {  # OS == "ios"
           'sources': [
             '<@(chrome_browser_ui_ios_sources)'
           ],
           'sources!': [
             'browser/ui/external_protocol_dialog_delegate.cc',
             'browser/ui/startup/default_browser_prompt.cc',
           ],
           'dependencies': [
             '../net/net.gyp:net',
@@ skipping 369 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }