Move gn _run target generation into test().

gpu/BUILD.gn

Index: gpu/BUILD.gn
diff --git a/gpu/BUILD.gn b/gpu/BUILD.gn
index e02fa1af477df492cc087a8f782451924a93d78a..2233f76640efdcaccf60570a74ce431c3d7a4d8d 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -101,13 +101,6 @@ source_set("test_support") {
   ]
 }
 
-group("gl_tests_run") {
-  testonly = true
-  deps = [
-    ":gl_tests",
-  ]
-}
-
 test("gl_tests") {
   sources = [
     "command_buffer/tests/compressed_texture_test.cc",
@@ -177,15 +170,6 @@ test("gl_tests") {
   }
 }
 
-# TODO(GYP): Delete this after we've converted everything to GN.
-# The _run targets exist only for compatibility w/ GYP.
-group("gpu_unittests_run") {
-  testonly = true
-  deps = [
-    ":gpu_unittests",
-  ]
-}
-
 test("gpu_unittests") {
   sources = [
     "command_buffer/client/buffer_tracker_unittest.cc",
@@ -329,15 +313,6 @@ test("gpu_perftests") {
   ]
 }
 
-# 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 = [
-    "//third_party/angle/src/tests:angle_unittests",
-  ]
-}
-
 if (is_win || is_linux || is_mac) {
   # TODO(GYP): Delete this after we've converted everything to GN.
   # The _run targets exist only for compatibility w/ GYP.