ozone: Support building without cairo

skia/skia_common.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 handles the removal of platform-specific files from the
 # Skia build.
 {
   'include_dirs': [
     '..',
     'config',
@@ skipping 19 matching lines @@
       'sources/': [
         ['exclude', '_mac\\.(cc|cpp|mm?)$'],
       ],
     }],
     [ 'OS != "win"', {
       'sources/': [ ['exclude', '_win\\.(cc|cpp)$'] ],
     }],
     [ 'desktop_linux == 0 and chromeos == 0', {
       'sources/': [ ['exclude', '_linux\\.(cc|cpp)$'] ],
     }],
+    [ 'use_cairo == 0', {
+      'sources/': [ ['exclude', '_cairo\\.(cc|cpp)$'] ],
+    }],
   ],
 
   # We would prefer this to be direct_dependent_settings,
   # however we currently have no means to enforce that direct dependents
   # re-export if they include Skia headers in their public headers.
   'all_dependent_settings': {
     'include_dirs': [
       '..',
       'config',
     ],
   },
 
   'msvs_disabled_warnings': [4244, 4267, 4341, 4345, 4390, 4554, 4748, 4800],
 }