ozone: Fix the way platform tests link ozone

ui/ozone/platform/drm/gbm.gypi

 # 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': {
     'internal_ozone_platform_deps': [
       'ozone_platform_gbm',
     ],
     'internal_ozone_platform_unittest_deps': [
@@ skipping 158 matching lines @@
       ],
     },
     {
       'target_name': 'ozone_platform_gbm_unittests',
       'type': 'none',
       'dependencies': [
         '../../build/linux/system.gyp:libdrm',
         '../../skia/skia.gyp:skia',
         '../gfx/gfx.gyp:gfx',
         '../gfx/gfx.gyp:gfx_geometry',
-        'ozone.gyp:ozone',
+        'ozone.gyp:ozone_platform',
         'drm_atomic',
       ],
       'export_dependent_settings': [
         '../../build/linux/system.gyp:libdrm',
         '../../skia/skia.gyp:skia',
         '../gfx/gfx.gyp:gfx_geometry',
         'drm_atomic',
       ],
       'direct_dependent_settings': {
         'sources': [
@@ skipping 12 matching lines @@
           'gpu/mock_scanout_buffer.cc',
           'gpu/mock_scanout_buffer.h',
           'gpu/mock_scanout_buffer_generator.cc',
           'gpu/mock_scanout_buffer_generator.h',
           'gpu/screen_manager_unittest.cc',
         ],
       },
     },
   ],
 }