Remove "use_skia" variable from gyp.

skia/skia.gyp

 # Copyright (c) 2012 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)',
       'variables': {
@@ skipping 457 matching lines @@
           'sources/': [
             ['exclude', '/pdf/'],
             ['exclude', '^ext/vector_platform_device_skia\\.'],
             ['exclude', 'opts_check_SSE2\\.cpp$'],
             ['exclude', 'SkFontHost_tables\\.cpp$',],
           ],
         }],
         [ 'OS == "mac"', {
           'defines': [
             'SK_BUILD_FOR_MAC',
+            'SK_USE_MAC_CORE_TEXT',
+#           'SK_USE_COLOR_LUMINANCE',
           ],
           'include_dirs': [
             '../third_party/skia/include/utils/mac',
           ],
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
             ],
           },
           'sources': [
             '../third_party/skia/src/utils/mac/SkStream_mac.cpp',
           ],
           'sources!': [
             # The mac's fonthost implements the table methods natively,
             # so no need for these generic versions.
             '../third_party/skia/src/ports/SkFontHost_tables.cpp',
           ],
-          'conditions': [
-             [ 'use_skia == 0', {
-               'sources/': [
-                 ['exclude', '/pdf/'],
-                 ['exclude', 'ext/vector_platform_device_skia\\.(cc|h)'],
-               ],
-            },
-            { # use_skia
-              'defines': [
-                'SK_USE_MAC_CORE_TEXT',
-#                'SK_USE_COLOR_LUMINANCE',
-              ],
-            }],
-          ],
         }],
         [ 'OS == "win"', {
           'sources!': [
             '../third_party/skia/src/core/SkMMapStream.cpp',
             '../third_party/skia/src/ports/SkFontHost_sandbox_none.cpp',
             '../third_party/skia/src/ports/SkThread_pthread.cpp',
             '../third_party/skia/src/ports/SkTime_Unix.cpp',
             'ext/SkThread_chrome.cc',
           ],
           'include_dirs': [
@@ skipping 334 matching lines @@
           'sources': [
             '../third_party/skia/src/opts/SkBitmapProcState_opts_none.cpp',
             '../third_party/skia/src/opts/SkBlitRow_opts_none.cpp',
             '../third_party/skia/src/opts/SkUtils_opts_none.cpp',
           ],
         },
       ],
     }],
   ],
 }