SkPDF: Stop `#include PREPROCESSOR_DEFINE` pattern

gyp/common_conditions.gypi

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # conditions used in both common.gypi and skia.gyp in chromium
 #
 {
   'defines': [
     'SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=<(skia_static_initializers)',
@@ skipping 363 matching lines @@
       ],
       'cflags_cc!': [
         '-fno-rtti',
         '-Wnon-virtual-dtor',
       ],
       'defines': [
         'DCT_IFAST_SUPPORTED',
         # using freetype's embolden allows us to adjust fake bold settings at
         # draw-time, at which point we know which SkTypeface is being drawn
         'SK_USE_FREETYPE_EMBOLDEN',
-        'SK_SFNTLY_SUBSETTER "sample/chromium/font_subsetter.h"',
         # When built as part of the system image we can enable certian non-NDK
         # compliant optimizations.
         'SK_BUILD_FOR_ANDROID_FRAMEWORK',
         # Optimizations for chromium (m30)
         'GR_GL_CUSTOM_SETUP_HEADER "gl/GrGLConfig_chrome.h"',
         'SK_DEFAULT_FONT_CACHE_LIMIT   (768 * 1024)',
         'SK_DEFAULT_GLOBAL_DISCARDABLE_MEMORY_POOL_SIZE (512 * 1024)',
         'SK_IGNORE_ETC1_SUPPORT',
         # We can't use the skia_shared_lib gyp setting because we need expose
         # this define globally and the the implemention define as a cflag.
@@ skipping 307 matching lines @@
           'LD_RUNPATH_SEARCH_PATHS': ['@executable_path/.'],
       },
     }],
 
   ], # end 'conditions'
   # The Xcode SYMROOT must be at the root. See build/common.gypi in chromium for more details
   'xcode_settings': {
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }