Fix gn check.

sky/engine/platform/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 import("//sky/engine/build/scripts/scripts.gni")
 import("//sky/engine/config.gni")
 
 # Most targets in this file are private actions so use that as the default.
 visibility = [ ":*" ]
@@ skipping 337 matching lines @@
     "graphics/gpu/WebGLImageBufferSurface.h",
     "graphics/gpu/WebGLImageConversion.cpp",
     "graphics/gpu/WebGLImageConversion.h",
     "graphics/Gradient.cpp",
     "graphics/Gradient.h",
     "graphics/GradientGeneratedImage.cpp",
     "graphics/GradientGeneratedImage.h",
     "graphics/GraphicsContext.cpp",
     "graphics/GraphicsContext.h",
     "graphics/GraphicsContextAnnotation.h",
-    "graphics/GraphicsContextCullSaver.h",
     "graphics/GraphicsContextRecorder.cpp",
     "graphics/GraphicsContextRecorder.h",
     "graphics/GraphicsContextState.cpp",
     "graphics/GraphicsContextState.h",
     "graphics/GraphicsContextStateSaver.h",
     "graphics/GraphicsTypes.cpp",
     "graphics/GraphicsTypes.h",
     "graphics/GraphicsTypes3D.h",
     "graphics/Image.cpp",
     "graphics/Image.h",
@@ skipping 408 matching lines @@
     # See https://bugs.webkit.org/show_bug.cgi?id=62916.
     # TODO(GYP)
     #'cflags': ['-marm'],
     #    'conditions': [
     #      ['OS=="android"', {
     #        'cflags!': ['-mthumb'],
     #      }],
     #    ],
   }
 }