ozone: Support building without cairo

skia/skia_chrome.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 all the Chrome-specific enhancements to Skia.
 # In component mode (shared_lib) it is folded into a single shared library with
 # the Skia files but in all other cases it is a separate library.
 {
   'dependencies': [
     'skia_library',
     'skia_chrome_opts',
     '../base/base.gyp:base',
     '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
   ],
 
   'direct_dependent_settings': {
     'include_dirs': [
       'ext',
     ],
   },
 
   'sources': [
     'ext/analysis_canvas.cc',
     'ext/analysis_canvas.h',
     'ext/benchmarking_canvas.cc',
     'ext/benchmarking_canvas.h',
     'ext/bitmap_platform_device.h',
-    'ext/bitmap_platform_device_android.cc',
-    'ext/bitmap_platform_device_android.h',
+    'ext/bitmap_platform_device_cairo.cc',
+    'ext/bitmap_platform_device_cairo.h',
     'ext/bitmap_platform_device_data.h',
-    'ext/bitmap_platform_device_linux.cc',
-    'ext/bitmap_platform_device_linux.h',
     'ext/bitmap_platform_device_mac.cc',
     'ext/bitmap_platform_device_mac.h',
+    'ext/bitmap_platform_device_skia.cc',
+    'ext/bitmap_platform_device_skia.h',
     'ext/bitmap_platform_device_win.cc',
     'ext/bitmap_platform_device_win.h',
     'ext/convolver.cc',
     'ext/convolver.h',
     'ext/google_logging.cc',
     'ext/image_operations.cc',
     'ext/image_operations.h',
     'ext/lazy_pixel_ref.cc',
     'ext/lazy_pixel_ref.h',
     'ext/lazy_pixel_ref_utils.cc',
@@ skipping 51 matching lines @@
       'xcode_settings': {
         'WARNING_CFLAGS!': [
           # Don't warn about string->bool used in asserts.
           '-Wstring-conversion',
         ],
       },
       'cflags!': [
         '-Wstring-conversion',
       ],
     }],
+    [ 'OS != "android" and (OS != "linux" or use_cairo==1)', {
+      'sources!': [
+        'ext/bitmap_platform_device_skia.cc',
+      ],
+    }],
   ],
 
   'target_conditions': [
     # Pull in specific linux files for android (which have been filtered out
     # by file name rules).
     [ 'OS == "android"', {
       'sources/': [
         ['include', 'ext/platform_device_linux\\.cc$'],
       ],
     }],
   ],
 }