ozone: Implement PlatformObject<T> for platform-specific objects

ui/ozone/ozone.gyp

 # Copyright 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,
     'external_ozone_platforms': [],
     'external_ozone_platform_files': [],
     'external_ozone_platform_deps': [],
@@ skipping 12 matching lines @@
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx_geometry',
         '<(DEPTH)/ui/gfx/ozone/gfx_ozone.gyp:gfx_ozone',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<@(external_ozone_platform_deps)',
         '<@(internal_ozone_platform_deps)',
       ],
       'defines': [
         'OZONE_IMPLEMENTATION',
       ],
       'variables': {
-        'platform_list_file': '<(SHARED_INTERMEDIATE_DIR)/ui/ozone/ozone_platform_list.cc',
+        'platform_list_cc_file': '<(INTERMEDIATE_DIR)/ui/ozone/platform_list.cc',
+        'platform_list_h_file': '<(SHARED_INTERMEDIATE_DIR)/ui/ozone/platform_list.h',
+        'platform_list_txt_file': '<(SHARED_INTERMEDIATE_DIR)/ui/ozone/platform_list.txt',
+        'constructor_list_cc_file': '<(INTERMEDIATE_DIR)/ui/ozone/constructor_list.cc',
         'ozone_platforms': [
           '<@(external_ozone_platforms)',
           '<@(internal_ozone_platforms)',
         ],
       },
+      'include_dirs': [
+        '<(SHARED_INTERMEDIATE_DIR)',
+      ],
       'sources': [
-        '<(platform_list_file)',
+        '<(platform_list_cc_file)',
+        '<(platform_list_h_file)',
+        '<(constructor_list_cc_file)',
+
         # common/chromeos files are excluded automatically when building with
         # chromeos=0, by exclusion rules in filename_rules.gypi due to the
         # 'chromeos' folder name.
         'common/chromeos/native_display_delegate_ozone.cc',
         'common/chromeos/native_display_delegate_ozone.h',
         'ozone_platform.cc',
         'ozone_platform.h',
         'ozone_switches.cc',
         'ozone_switches.h',
+        'platform_selection.cc',
+        'platform_selection.h',
         '<@(external_ozone_platform_files)',
       ],
       'actions': [
         {
           'action_name': 'generate_ozone_platform_list',
           'variables': {
             'generator_path': 'generate_ozone_platform_list.py',
           },
           'inputs': [
             '<(generator_path)',
           ],
           'outputs': [
-            '<(platform_list_file)',
+            '<(platform_list_cc_file)',
+            '<(platform_list_h_file)',
+            '<(platform_list_txt_file)',
           ],
           'action': [
             'python',
             '<(generator_path)',
-            '--output_file=<(platform_list_file)',
+            '--output_cc=<(platform_list_cc_file)',
+            '--output_h=<(platform_list_h_file)',
+            '--output_txt=<(platform_list_txt_file)',
             '--default=<(ozone_platform)',
             '<@(ozone_platforms)',
           ],
         },
+        {
+          'action_name': 'generate_constructor_list',
+          'variables': {
+            'generator_path': 'generate_constructor_list.py',
+          },
+          'inputs': [
+            '<(generator_path)',
+            '<(platform_list_txt_file)',
+          ],
+          'outputs': [
+            '<(constructor_list_cc_file)',
+          ],
+          'action': [
+            'python',
+            '<(generator_path)',
+            '--platform_list=<(platform_list_txt_file)',
+            '--output_cc=<(constructor_list_cc_file)',
+            '--namespace=ui',
+            '--typename=OzonePlatform',
+            '--include="ui/ozone/ozone_platform.h"'
+          ],
+        },
       ],
       'conditions': [
         ['use_udev == 0', {
           'sources/': [
             ['exclude', '_udev\\.(h|cc)$'],
           ],
         }],
         ['chromeos==1', {
           'dependencies': [
             '<(DEPTH)/ui/display/display.gyp:display_types',
@@ skipping 18 matching lines @@
         'platform/egltest/egltest.gypi',
       ],
     }],
     ['<(ozone_platform_test) == 1', {
       'includes': [
         'platform/test/test.gypi',
       ],
     }],
   ],
 }