Remove all uses of toolkit_use_gtk in the gyp files.

components/nacl.gyp

 # Copyright 2013 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': [
     'nacl/nacl_defines.gypi',
@@ skipping 214 matching lines @@
                 'nacl/loader/nonsfi/nonsfi_main.cc',
                 'nacl/loader/nonsfi/nonsfi_main.h',
                 '../ppapi/nacl_irt/plugin_main.cc',
                 '../ppapi/nacl_irt/plugin_main.h',
                 '../ppapi/nacl_irt/plugin_startup.cc',
                 '../ppapi/nacl_irt/plugin_startup.h',
                 '../ppapi/nacl_irt/ppapi_dispatcher.cc',
                 '../ppapi/nacl_irt/ppapi_dispatcher.h',
               ],
               'conditions': [
-                ['toolkit_uses_gtk == 1', {
-                  'dependencies': [
-                    '../build/linux/system.gyp:gtk',
-                  ],
-                }],
                 ['use_glib == 1', {
                   'dependencies': [
                     '../build/linux/system.gyp:glib',
                   ],
                 }],
                 ['os_posix == 1 and OS != "mac"', {
                   'conditions': [
                     # TODO(dmikurube): Kill linux_use_tcmalloc. http://crbug.com/345554
                     ['(use_allocator!="none" and use_allocator!="see_use_tcmalloc") or (use_allocator=="see_use_tcmalloc" and linux_use_tcmalloc==1)', {
                       'dependencies': [
@@ skipping 159 matching lines @@
       ],
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../content/content.gyp:content_common',
       ],
     },
   ]
 }