tunnel down texture-size-constraint to imagefilters

gyp/core.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Core Skia library code.
 {
   'targets': [
     {
       'target_name': 'core',
       'product_name': 'skia_core',
@@ skipping 89 matching lines @@
               '../include/gpu',
               '../src/gpu',
           ],
         }],
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/c',
           '../include/config',
           '../include/core',
+          '../include/gpu',
           '../include/pathops',
           '../include/pipe',
         ],
         'conditions': [
           [ 'skia_os == "mac"', {
             'include_dirs': [
               '../include/utils/mac',
             ],
           }],
           [ 'skia_os == "ios"', {
             'include_dirs': [
               '../include/utils/ios',
             ],
           }],
           [ 'skia_os == "win"', {
             'include_dirs': [
               'config/win',
             ],
           }],
         ],
       },
     },
   ],
 }