Allow compositor_unittests to compile on posix

ui/gfx/compositor/compositor.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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'target_defaults': {
     'sources/': [
@@ skipping 184 matching lines @@
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
       ],
       'sources': [
         '../test/gfx_test_utils.cc',
         '../test/gfx_test_utils.h',
       ],
       'conditions': [
         # We allow on platforms without a compositor (such as OS_WIN).
         # They will use compositor_stub.cc.
-        ['toolkit_views == 1', {
+        ['toolkit_views == 1 or os_posix==1', {
           'dependencies': [
             '<(DEPTH)/skia/skia.gyp:skia',
             'compositor',
           ],
           'sources': [
             'test/test_compositor.cc',
             'test/test_compositor.h',
             'test/test_texture.cc',
             'test/test_texture.h',
           ],
         }],
       ],
     },
   ],
 }