Add a stub implementation of khronos_glcts_test to the GN build.

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 three targets that we are using to
 # track the progress of the GYP->GN migration:
 #
 # If you run 'ninja gn_build gyp_remaining gyp_groups', and then
 # run 'ninja', the second ninja invocation should do nothing. This
 # indicates that everything built by a ninja build is in fact
@@ skipping 77 matching lines @@
         '../gin/gin.gyp:gin_v8_snapshot_fingerprint',
         '../gin/gin.gyp:gin_shell',
         '../gin/gin.gyp:gin_unittests',
         '../google_apis/gcm/gcm.gyp:gcm_unit_tests',
         '../google_apis/gcm/gcm.gyp:mcs_probe',
         '../google_apis/google_apis.gyp:google_apis_unittests',
         '../gpu/gpu.gyp:angle_unittests',
         '../gpu/gpu.gyp:gl_tests',
         '../gpu/gpu.gyp:gpu_perftests',
         '../gpu/gpu.gyp:gpu_unittests',
+        '../gpu/khronos_glcts_support/khronos_glcts_test.gyp:khronos_glcts_test',  # TODO(GYP) crbug.com/471903 to make this complete.
         '../ipc/ipc.gyp:ipc_perftests',
         '../ipc/ipc.gyp:ipc_tests',
         '../ipc/mojo/ipc_mojo.gyp:ipc_mojo_unittests',
         '../jingle/jingle.gyp:jingle_unittests',
         '../media/media.gyp:ffmpeg_regression_tests',  # TODO(GYP) this should be conditional on media_use_ffmpeg
         '../media/media.gyp:media_perftests',
         '../media/media.gyp:media_unittests',
         '../media/cast/cast.gyp:cast_benchmarks',
         '../media/cast/cast.gyp:cast_unittests',
         '../media/cast/cast.gyp:generate_barcode_video',
@@ skipping 299 matching lines @@
       ],
     },
     {
       'target_name': 'gyp_remaining',
       'type': 'none',
       'conditions': [
         ['OS=="linux"', {
           'dependencies': [
             '../chrome/chrome.gyp:performance_browser_tests',
             '../cloud_print/cloud_print.gyp:cloud_print_unittests',
-            '../gpu/gpu.gyp:gl_tests',
-            '../gpu/gles2_conform_support/gles2_conform_support.gyp:gles2_conform_support',
-            '../gpu/gles2_conform_support/gles2_conform_test.gyp:gles2_conform_test',
-            '../gpu/khronos_glcts_support/khronos_glcts_test.gyp:khronos_glcts_test',
+            '../gpu/gles2_conform_support/gles2_conform_support.gyp:gles2_conform_support',  # crbug.com/471920
+            '../gpu/gles2_conform_support/gles2_conform_test.gyp:gles2_conform_test',  # crbug.com/471920
             '../third_party/webrtc/tools/tools.gyp:frame_analyzer',
             '../third_party/webrtc/tools/tools.gyp:rgba_to_i420_converter',
 
             # TODO(GYP) - list all of the examples explicitly.
             '../ppapi/ppapi_internal.gyp:*',
           ],
           'conditions': [
             ['disable_nacl==0 and disable_nacl_untrusted==0', {
               'dependencies': [
                 '../components/nacl.gyp:nacl_loader_unittests',
@@ skipping 67 matching lines @@
         'chromium_builder_perf',
         'chromium_builder_tests',
         'chromium_builder_webrtc',
         'chromium_gpu_builder',
         'chromium_gpu_debug_builder',
       ],
     },
   ]
 }