Enable Ozone software implementation in GYP

ui/gfx/gfx.gyp

 # Copyright (c) 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 117 matching lines @@
         'insets.h',
         'insets_base.h',
         'insets_f.cc',
         'insets_f.h',
         'interpolated_transform.cc',
         'interpolated_transform.h',
         'mac/scoped_ns_disable_screen_updates.h',
         'matrix3_f.cc',
         'matrix3_f.h',
         'native_widget_types.h',
+        'ozone/impl/drm_skbitmap_ozone.cc',
+        'ozone/impl/drm_skbitmap_ozone.h',
+        'ozone/impl/drm_wrapper_ozone.cc',
+        'ozone/impl/drm_wrapper_ozone.h',
+        'ozone/impl/hardware_display_controller_ozone.cc',
+        'ozone/impl/hardware_display_controller_ozone.h',
+        'ozone/impl/software_surface_factory_ozone.cc',
+        'ozone/impl/software_surface_factory_ozone.h',
+        'ozone/impl/software_surface_ozone.cc',
+        'ozone/impl/software_surface_ozone.h',
         'ozone/surface_factory_ozone.cc',
         'ozone/surface_factory_ozone.h',
         'pango_util.cc',
         'pango_util.h',
         'path.cc',
         'path.h',
         'path_aura.cc',
         'path_gtk.cc',
         'path_win.cc',
         'path_win.h',
@@ skipping 202 matching lines @@
             'render_text.cc',
             'render_text.h',
             'text_utils_skia.cc',
           ],
         }],
         ['use_pango==1', {
           'dependencies': [
             '<(DEPTH)/build/linux/system.gyp:pangocairo',
           ],
         }],
+        ['use_ozone==1', {
+          'dependencies': [
+          '<(DEPTH)/build/linux/system.gyp:dridrm',
+          ],
+        }],
       ],
       'target_conditions': [
         # Need 'target_conditions' to override default filename_rules to include
         # the file on iOS.
         ['OS == "ios"', {
           'sources/': [
             ['include', '^scoped_cg_context_save_gstate_mac\\.h$'],
           ],
         }],
       ],
@@ skipping 16 matching lines @@
          ],
          'variables': {
            'jni_gen_package': 'ui/gfx',
          },
          'includes': [ '../../build/jni_generator.gypi' ],
        },
      ],
     }],
   ],
 }