Move dart:_vmservice native entries into bootstrap natives

runtime/vm/vm.gypi

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 {
   'variables': {
     'gen_source_dir': '<(SHARED_INTERMEDIATE_DIR)',
     'libgen_in_cc_file': '../lib/libgen_in.cc',
     'builtin_in_cc_file': '../bin/builtin_in.cc',
     'async_cc_file': '<(gen_source_dir)/async_gen.cc',
@@ skipping 177 matching lines @@
       'includes': [
         '../lib/async_sources.gypi',
         '../lib/collection_sources.gypi',
         '../lib/core_sources.gypi',
         '../lib/developer_sources.gypi',
         '../lib/internal_sources.gypi',
         '../lib/isolate_sources.gypi',
         '../lib/math_sources.gypi',
         '../lib/mirrors_sources.gypi',
         '../lib/typed_data_sources.gypi',
+        '../lib/vmservice_sources.gypi',
       ],
       'sources': [
         'bootstrap.cc',
         # Include generated source files.
         '<(async_cc_file)',
         '<(async_patch_cc_file)',
         '<(core_cc_file)',
         '<(core_patch_cc_file)',
         '<(collection_cc_file)',
         '<(collection_patch_cc_file)',
@@ skipping 942 matching lines @@
             '--var_name', 'dart::Bootstrap::vmservice_source_paths_',
             '--library_name', 'dart:_vmservice',
             '<@(_sources)',
           ],
           'message': 'Generating ''<(vmservice_cc_file)'' file.'
         },
       ]
     },
   ]
 }