ui: Move screen unit test into gfx_unittests target.

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': [
     {
       'target_name': 'gfx_unittests',
       'type': '<(gtest_target_type)',
       # iOS uses a small subset of ui. common_sources are the only files that
       # are built on iOS.
       'common_sources' : [
         'font_unittest.cc',
         'image/image_family_unittest.cc',
         'image/image_skia_unittest.cc',
         'image/image_unittest.cc',
         'image/image_unittest_util.cc',
         'image/image_unittest_util.h',
         'image/image_unittest_util_ios.mm',
         'image/image_unittest_util_mac.mm',
+        'screen_unittest.cc',
         'test/run_all_unittests.cc',
         'text_elider_unittest.cc',
         'text_utils_unittest.cc',
       ],
       'all_sources': [
         '<@(_common_sources)',
         'animation/animation_container_unittest.cc',
         'animation/animation_unittest.cc',
         'animation/multi_animation_unittest.cc',
         'animation/slide_animation_unittest.cc',
@@ skipping 96 matching lines @@
           # does not compile display_observer.cc
           'sources!': [
             'display_change_notifier_unittest.cc',
           ],
         }],
         ['OS=="android" or OS=="ios"', {
           'sources!': [
             'render_text_unittest.cc',
           ],
         }],
+        ['use_aura==1', {
+          'sources!': [
+            'screen_unittest.cc',
+          ],
+        }],
       ],
     }
   ],
   'conditions': [
     ['OS == "android"', {
       'targets': [
         {
           'target_name': 'gfx_unittests_apk',
           'type': 'none',
           'dependencies': [
             '../android/ui_android.gyp:ui_java',
             'gfx_unittests',
           ],
           'variables': {
             'test_suite_name': 'gfx_unittests',
           },
           'includes': [ '../../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }