Refactor grit -D flags into a gyp variable so we don't

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 19 matching lines @@
             'input_path': './webkit_resources.grd',
           },
           'inputs': [
             '<!@(<(grit_info_cmd) --inputs <(input_path))',
           ],
           'outputs': [
             '<!@(<(grit_info_cmd) --outputs \'<(grit_out_dir)\' <(input_path))',
           ],
           'action': ['<@(grit_cmd)',
                      '-i', '<(input_path)', 'build',
-                     '-o', '<(grit_out_dir)'],
+                     '-o', '<(grit_out_dir)',
+                     '<@(grit_defines)'],
           'message': 'Generating resources from <(input_path)',
         },
         {
           'action_name': 'webkit_chromium_resources',
           'variables': {
             'input_path': '<(webkit_src_dir)/WebKit/chromium/WebKit.grd',
           },
           'inputs': [
             '<!@(<(grit_info_cmd) --inputs <(input_path))',
           ],
           'outputs': [
             '<!@(<(grit_info_cmd) --outputs \'<(grit_out_dir)\' <(input_path))',
           ],
           'action': ['<@(grit_cmd)',
                      '-i', '<(input_path)', 'build',
-                     '-o', '<(grit_out_dir)'],
+                     '-o', '<(grit_out_dir)',
+                     '<@(grit_defines)'],
           'message': 'Generating resources from <(input_path)',
         },
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '<(SHARED_INTERMEDIATE_DIR)/webkit',
         ],
       },
       'conditions': [
         ['OS=="win"', {
@@ skipping 15 matching lines @@
             'input_path': './webkit_strings.grd',
           },
           'inputs': [
             '<!@(<(grit_info_cmd) --inputs <(input_path))',
           ],
           'outputs': [
             '<!@(<(grit_info_cmd) --outputs \'<(grit_out_dir)\' <(input_path))',
           ],
           'action': ['<@(grit_cmd)',
                      '-i', '<(input_path)', 'build',
-                     '-o', '<(grit_out_dir)'],
+                     '-o', '<(grit_out_dir)',
+                     '<@(grit_defines)'],
           'message': 'Generating resources from <(input_path)',
         },
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '<(SHARED_INTERMEDIATE_DIR)/webkit',
         ],
       },
       'conditions': [
         ['OS=="win"', {
@@ skipping 416 matching lines @@
         }],
         ['inside_chromium_build==0', {
           'dependencies': [
             '<(DEPTH)/webkit/support/setup_third_party.gyp:third_party_headers',
           ],
         }],
       ],
     },
   ],
 }