Make the gyp files more cross-platform across the Unices

webkit/glue/webkit_glue.gypi

 # 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': {
     'conditions': [
       ['inside_chromium_build==0', {
         'webkit_src_dir': '../../../../..',
       },{
@@ skipping 427 matching lines @@
         '../extensions/v8/playback_extension.h',
         '../extensions/v8/profiler_extension.cc',
         '../extensions/v8/profiler_extension.h',
 
       ],
       # When glue is a dependency, it needs to be a hard dependency.
       # Dependents may rely on files generated by this target or one of its
       # own hard dependencies.
       'hard_dependency': 1,
       'conditions': [
-        ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"', {
+        ['toolkit_uses_gtk==1', {
           'dependencies': [
             '<(DEPTH)/build/linux/system.gyp:gtk',
           ],
           'sources!': [
             'plugins/plugin_stubs.cc',
           ],
-        }, { # else: OS!="linux" and OS!="freebsd" and OS!="openbsd" \
-             # and OS!="solaris"'
+        }, { # else: toolkit_uses_gtk!=1
           'sources/': [['exclude', '_(linux|gtk)(_data)?\\.cc$'],
                        ['exclude', r'/gtk_']],
         }],
         ['OS!="mac"', {
           'sources/': [['exclude', '_mac\\.(cc|mm)$']],
           'sources!': [
             'webthemeengine_impl_mac.cc',
           ],
         }, {  # else: OS=="mac"
           'sources/': [['exclude', 'plugin_(lib|list)_posix\\.cc$']],
@@ skipping 70 matching lines @@
               },
               'includes': [ '../../build/grit_action.gypi' ],
             },
           ],
           'includes': [ '../../build/grit_target.gypi' ],
         },
       ],
     }],
   ],
 }