Remove all uses of toolkit_use_gtk in the gyp files.

courgette/courgette.gyp

 # Copyright (c) 2011 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,
     'courgette_lib_sources': [
       'adjustment_method.cc',
       'adjustment_method_2.cc',
@@ skipping 111 matching lines @@
         [ 'os_posix == 1 and OS != "mac" and OS != "android" and OS != "ios"', {
           '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': [
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         }],
-        [ 'toolkit_uses_gtk == 1', {
-          'dependencies': [
-            # Workaround for gyp bug 69.
-            # Needed to handle the #include chain:
-            #   base/test_suite.h
-            #   gtk/gtk.h
-            '../build/linux/system.gyp:gtk',
-          ],
-        }],
       ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [4267, ],
     },
     {
       'target_name': 'courgette_fuzz',
       'type': 'executable',
       'sources': [
         'base_test_unittest.cc',
         'base_test_unittest.h',
         'encoded_program_fuzz_unittest.cc',
        ],
       'dependencies': [
         'courgette_lib',
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
         '../base/base.gyp:test_support_base',
         '../testing/gtest.gyp:gtest',
       ],
-      'conditions': [
-        [ 'toolkit_uses_gtk == 1', {
-          'dependencies': [
-            # Workaround for gyp bug 69.
-            # Needed to handle the #include chain:
-            #   base/test_suite.h
-            #   gtk/gtk.h
-            '../build/linux/system.gyp:gtk',
-          ],
-        }],
-      ],
     },
   ],
   'conditions': [
     ['OS=="win" and target_arch=="ia32"', {
       'targets': [
         {
           'target_name': 'courgette_lib64',
           'type': 'static_library',
           'dependencies': [
             '../base/base.gyp:base_win64',
@@ skipping 48 matching lines @@
               '../build/cp.py',
               '<@(_inputs)',
               '<@(_outputs)'
             ],
           }],
         },
       ],
     }],
   ],
 }