Move gn _run target generation into test().

ui/gl/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
@@ skipping 310 matching lines @@
 
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
     deps += [
       "//ui/gfx/x",
       "//ui/platform_window/x11",
     ]
   }
 }
 
-# TODO(GYP): Delete this after we've converted everything to GN.
-# The _run targets exist only for compatibility w/ GYP.
-group("gl_unittests_run") {
-  testonly = true
-  deps = [
-    ":gl_unittests",
-  ]
-}
-
 test("gl_unittests") {
   sources = [
     "gl_api_unittest.cc",
     "gl_image_ref_counted_memory_unittest.cc",
     "gl_image_shared_memory_unittest.cc",
     "gpu_timing_unittest.cc",
     "test/run_all_unittests.cc",
   ]
 
   if (is_win || is_android || is_linux) {
@@ skipping 48 matching lines @@
     sources = [
       "../android/java/src/org/chromium/ui/gl/SurfaceTextureListener.java",
       "../android/java/src/org/chromium/ui/gl/SurfaceTexturePlatformWrapper.java",
     ]
     public_deps = [
       ":surface_jni_headers",
     ]
     jni_package = "ui/gl"
   }
 }