NotForReview: Implement zero/one-copy texture for ozone freon using Intel DRM

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_platforms': [
       'gbm',
     ],
     'use_mesa_platform_null%': 0,
 
     # TODO(dshwang): remove this flag when all gbm hardwares support vgem map.
     'ozone_use_vgem_map%': 0,
   },
   'targets': [
     {
       'target_name': 'ozone_platform_gbm',
       'type': 'static_library',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../build/linux/system.gyp:libdrm',
+        '../../build/linux/system.gyp:libdrm_intel',
         '../../build/linux/system.gyp:gbm',
         '../../skia/skia.gyp:skia',
         '../../third_party/khronos/khronos.gyp:khronos_headers',
         '../base/ui_base.gyp:ui_base',
         '../events/events.gyp:events',
         '../events/ozone/events_ozone.gyp:events_ozone',
         '../events/ozone/events_ozone.gyp:events_ozone_evdev',
         '../events/ozone/events_ozone.gyp:events_ozone_layout',
         '../gfx/gfx.gyp:gfx',
       ],
@@ skipping 20 matching lines @@
       ],
       'conditions': [
         ['use_mesa_platform_null==1', {
           'defines': ['USE_MESA_PLATFORM_NULL'],
         }],
         ['ozone_use_vgem_map==1', {
           'defines': ['OZONE_USE_VGEM_MAP'],
           'sources': [
             'gpu/client_native_pixmap_vgem.cc',
             'gpu/client_native_pixmap_vgem.h',
+            'gpu/intel_drm_pixmap.cc',
+            'gpu/intel_drm_pixmap.h',
           ],
         }],
       ],
     },
   ],
 }