Ensure that include paths used by webkit_compositor_bindings work in WebKit as well.

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': '../../../../..',
       },{
@@ skipping 137 matching lines @@
         'fileapi',
         'webkit_base',
         'webkit_media',
         'webkit_resources',
         'webkit_strings',
         'webkit_user_agent',
       ],
       'include_dirs': [
         '<(INTERMEDIATE_DIR)',
         '<(SHARED_INTERMEDIATE_DIR)/webkit',
+        # Needed because of the include paths used in webkit_compositor_support.
+        '<(webkit_src_dir)',
       ],
       'sources': [
         # This list contains all .h, .cc, and .mm files in glue except for
         # those in the test subdirectory and those with unittest in in their
         # names.
         '../forms/form_data.cc',
         '../forms/form_data.h',
         '../forms/form_data_predictions.cc',
         '../forms/form_data_predictions.h',
         '../forms/form_field.cc',
@@ skipping 400 matching lines @@
               },
               'includes': [ '../../build/grit_action.gypi' ],
             },
           ],
           'includes': [ '../../build/grit_target.gypi' ],
         },
       ],
     }],
   ],
 }