linux: Avoid using unset Fontconfig properties.

ui/gfx/gfx_tests.gyp

 # Copyright 2014 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,
   },
   'targets': [
     {
@@ skipping 25 matching lines @@
         'blit_unittest.cc',
         'break_list_unittest.cc',
         'canvas_unittest.cc',
         'codec/jpeg_codec_unittest.cc',
         'codec/png_codec_unittest.cc',
         'color_analysis_unittest.cc',
         'color_utils_unittest.cc',
         'display_change_notifier_unittest.cc',
         'display_unittest.cc',
         'font_list_unittest.cc',
-        'font_render_params_linux_unittest.cc',
         'geometry/box_unittest.cc',
         'geometry/cubic_bezier_unittest.cc',
         'geometry/insets_unittest.cc',
         'geometry/matrix3_unittest.cc',
         'geometry/point_unittest.cc',
         'geometry/point3_unittest.cc',
         'geometry/quad_unittest.cc',
         'geometry/r_tree_unittest.cc',
         'geometry/rect_unittest.cc',
         'geometry/safe_integer_conversions_unittest.cc',
@@ skipping 40 matching lines @@
             'transform_unittest.cc',
             'interpolated_transform_unittest.cc',
           ],
         }],
         ['use_pango == 1', {
           'dependencies': [
             '../../build/linux/system.gyp:fontconfig',
             '../../build/linux/system.gyp:pangocairo',
           ],
           'sources': [
+            'font_render_params_linux_unittest.cc',
             'platform_font_pango_unittest.cc',
           ],
           'conditions': [
             ['use_allocator!="none"', {
               'dependencies': [
                 '../../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         }],
@@ skipping 41 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'gfx_unittests',
           },
           'includes': [ '../../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }