GN: take over CommandBuffer bot

gyp/common.gypi

 # Copyright 2011 The Android Open Source Project
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # This file is automatically included by gyp_skia when building any target.
 
 {
   'includes': [
     'common_variables.gypi',
@@ skipping 59 matching lines @@
           ],
         },
         'conditions': [
           [ 'skia_vulkan_debug_layers', {
             'configurations': {
               'Debug':   { 'defines': [ 'SK_ENABLE_VK_LAYERS' ] },
             },
           }],
         ],
       }],
-      [ 'skia_command_buffer', {
-        'defines': [
-          'SK_COMMAND_BUFFER',
-        ],
-        'direct_dependent_settings': {
-          'defines': [
-            'SK_COMMAND_BUFFER',
-          ],
-        },
-      }],
       [ 'skia_win_debuggers_path and skia_os == "win"',
         {
           'defines': [
             'SK_USE_CDB',
           ],
         },
       ],
       [ 'skia_android_framework==0', {
         # These defines are not used for skia_android_framework, where we build
         # one makefile and allow someone to add SK_DEBUG etc for their own
@@ skipping 21 matching lines @@
       [ 'skia_experimental_shadowing',
         {
           'defines': [
             'SK_EXPERIMENTAL_SHADOWING',
           ],
         },
       ],
     ],
   }, # end 'target_defaults'
 }