enable colorfilter optimization (big speedup for sites with shadows)

skia/skia.gyp

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'skia',
       'type': '<(component)',
       'sources': [
@@ skipping 711 matching lines @@
       'msvs_disabled_warnings': [4244, 4267,4345, 4390, 4554, 4800],
       'mac_framework_dirs': [
         '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework/Frameworks',
       ],
       'defines': [
         'SK_BUILD_NO_IMAGE_ENCODE',
         'GR_GL_CUSTOM_SETUP_HEADER="GrGLConfig_chrome.h"',
         'GR_STATIC_RECT_VB=1',
         'GR_AGGRESSIVE_SHADER_OPTS=1',
         'SK_DISABLE_FAST_AA_STROKE_RECT',
-        'SK_IGNORE_CF_OPTIMIZATION',
+#        'SK_ENABLE_FAST_SHADERMASK',
         'SK_DEFAULT_FONT_CACHE_LIMIT=(16*1024*1024)',
       ],
       'sources!': [
         '../third_party/skia/include/core/SkTypes.h',
       ],
       'conditions': [
         [ 'OS != "android"', {
           'sources/': [
             ['exclude', '_android\\.(cc|cpp)$'],
           ],
@@ skipping 370 matching lines @@
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'ext/image_operations_bench.cc',
       ],
     },
   ],
 }