Move gn _run target generation into test().

url/BUILD.gn

 # Copyright (c) 2013 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("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 97 matching lines @@
       ":url_java",
       ":url_jni_headers",
       "//base",
       "//base/third_party/dynamic_annotations",
     ]
   }
 }
 
 # TODO(dpranke): crbug.com/360936. Get this to build and run on Android.
 if (!is_android) {
-  # TODO(GYP): Delete this after we've converted everything to GN.
-  # The _run targets exist only for compatibility w/ GYP.
-  group("url_unittests_run") {
-    testonly = true
-    deps = [
-      ":url_unittests",
-    ]
-  }
-
   test("url_unittests") {
     sources = [
       "gurl_unittest.cc",
       "origin_unittest.cc",
       "scheme_host_port_unittest.cc",
       "url_canon_icu_unittest.cc",
       "url_canon_unittest.cc",
       "url_parse_unittest.cc",
       "url_test_utils.h",
       "url_util_unittest.cc",
     ]
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
     deps = [
       ":url",
       "//base",
       "//base/test:run_all_unittests",
       "//testing/gtest",
       "//third_party/icu:icuuc",
     ]
   }
 }