Add GN isolate support for a bunch of unittests.

gpu/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.
 
 # GYP-to-GN project mappings:
 #
 #  gpu.gyp:command_buffer_client => //gpu/command_buffer/client
 #
 #  gpu.gyp:command_buffer_common => //gpu/command_buffer/common
 #
@@ skipping 255 matching lines @@
     "//base/test:test_support",
     "//gpu/command_buffer/service",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx/geometry",
     "//ui/gl",
   ]
 }
 
+# TODO(GYP): Delete this after we've converted everything to GN.
+# The _run targets exist only for compatibility w/ GYP.
+group("angle_unittests_run") {
+  testonly = true
+  deps = [
+    ":angle_unittests",
+  ]
+}
+
 test("angle_unittests") {
   sources = [
     "angle_unittest_main.cc",
   ]
 
   deps = [
     "//base",
     "//base/test:test_support",
     "//base/third_party/dynamic_annotations",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/angle:translator_static",
   ]
 }