remove reference to SkCullPoints (unused)

skia/skia_library.gypi

 # Copyright 2013 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.
 
 
 # This gypi file contains the Skia library.
 # In component mode (shared_lib) it is folded into a single shared library with
 # the Chrome-specific enhancements but in all other cases it is a separate lib.
 
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@@ skipping 51 matching lines @@
     '../third_party/skia/src/sfnt/SkOTUtils.cpp',
   ],
 
   # Exclude all unused files in skia utils.gypi file
   'sources!': [
   '../third_party/skia/src/utils/SkBitmapHasher.cpp',
   '../third_party/skia/src/utils/SkBoundaryPatch.cpp',
   '../third_party/skia/src/utils/SkFrontBufferedStream.cpp',
   '../third_party/skia/src/utils/SkCamera.cpp',
   '../third_party/skia/src/utils/SkCubicInterval.cpp',
-  '../third_party/skia/src/utils/SkCullPoints.cpp',
   '../third_party/skia/src/utils/SkDumpCanvas.cpp',
   '../third_party/skia/src/utils/SkInterpolator.cpp',
   '../third_party/skia/src/utils/SkLayer.cpp',
   '../third_party/skia/src/utils/SkMD5.cpp',
   '../third_party/skia/src/utils/SkMeshUtils.cpp',
   '../third_party/skia/src/utils/SkNinePatch.cpp',
   '../third_party/skia/src/utils/SkOSFile.cpp',
   '../third_party/skia/src/utils/SkParsePath.cpp',
   '../third_party/skia/src/utils/SkSHA1.cpp',
 
@@ skipping 223 matching lines @@
       '../third_party/skia/include/pdf',
       '../third_party/skia/include/gpu',
       '../third_party/skia/include/lazy',
       '../third_party/skia/include/pathops',
       '../third_party/skia/include/pipe',
       '../third_party/skia/include/ports',
       '../third_party/skia/include/utils',
     ],
   },
 }