tools/gn: delete generate_test_gn_data tool

build/gn_migration.gypi

 # Copyright (c) 2015 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.
 
 # This file defines five targets that we are using to track the progress of the
 # GYP->GN migration:
 #
 # 'both_gn_and_gyp' lists what GN is currently capable of building and should
 # match the 'both_gn_and_gyp' target in //BUILD.gn.
 #
@@ skipping 349 matching lines @@
             '../mojo/mojo_base.gyp:mojo_common_unittests',
             '../ppapi/tools/ppapi_tools.gyp:pepper_hash_for_uma',
             '../skia/skia.gyp:filter_fuzz_stub',
             '../skia/skia.gyp:image_operations_bench',
             '../sync/tools/sync_tools.gyp:sync_client',
             '../sync/tools/sync_tools.gyp:sync_listen_notifications',
             '../third_party/codesighs/codesighs.gyp:codesighs',
             '../third_party/codesighs/codesighs.gyp:maptsvdifftool',
             '../third_party/pdfium/samples/samples.gyp:pdfium_diff',
             '../third_party/pdfium/samples/samples.gyp:pdfium_test',
-            '../tools/gn/gn.gyp:generate_test_gn_data',
             '../tools/gn/gn.gyp:gn',
             '../tools/gn/gn.gyp:gn_unittests',
             '../tools/perf/clear_system_cache/clear_system_cache.gyp:clear_system_cache',
             '../ui/message_center/message_center.gyp:message_center_unittests',
             '../ui/views/examples/examples.gyp:views_examples_with_content_exe',
           ],
         }],
         ['media_use_ffmpeg==1 and OS!="android"', {
           'dependencies': [
             '../media/media.gyp:ffmpeg_regression_tests',
@@ skipping 396 matching lines @@
         }],
         ['OS=="android" and target_arch != "x64"', {
           'dependencies': [
             '../third_party/android_platform/relocation_packer.gyp:android_relocation_packer_unittests#host'
           ],
         }],
       ],
     },
   ]
 }