Remove use_libcc_for_compositor gyp variable

webkit/glue/webkit_glue.gypi

 # 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': {
     'conditions': [
       ['inside_chromium_build==0', {
         'webkit_src_dir': '../../../../..',
       },{
         'webkit_src_dir': '../../third_party/WebKit',
       }],
     ],
-
-    'use_libcc_for_compositor%': 0,
   },
   'target_defaults': {
      # Disable narrowing-conversion-in-initialization-list warnings in that we
      # do not want to fix it in data file "webcursor_gtk_data.h".
      'cflags+': ['-Wno-narrowing'],
      'cflags_cc+': ['-Wno-narrowing'],
   },
   'targets': [
     {
       'target_name': 'webkit_resources',
@@ skipping 441 matching lines @@
                  '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
                ],
             }],
           ],
         }],
         ['inside_chromium_build==0', {
           'dependencies': [
             '<(DEPTH)/webkit/support/setup_third_party.gyp:third_party_headers',
           ],
         }],
-        ['use_libcc_for_compositor==1', {
-          'defines': [
-            'USE_LIBCC_FOR_COMPOSITOR',
-          ],
-        }],
       ],
     },
   ],
   'conditions': [
     ['use_third_party_translations==1', {
       'targets': [
         {
           'target_name': 'inspector_strings',
           'type': 'none',
           'variables': {
             'grit_out_dir': '<(PRODUCT_DIR)/resources/inspector/l10n',
           },
           'actions': [
             {
               'action_name': 'inspector_strings',
               'variables': {
                 'grit_grd_file': 'inspector_strings.grd',
               },
               'includes': [ '../../build/grit_action.gypi' ],
             },
           ],
           'includes': [ '../../build/grit_target.gypi' ],
         },
       ],
     }],
   ],
 }