Revert of 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 2233f76640efdcaccf60570a74ce431c3d7a4d8d..e02fa1af477df492cc087a8f782451924a93d78a 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -98,6 +98,13 @@
     "//testing/gmock",
     "//testing/gtest",
     "//ui/gl:gl_unittest_utils",
+  ]
+}
+
+group("gl_tests_run") {
+  testonly = true
+  deps = [
+    ":gl_tests",
   ]
 }
 
@@ -168,6 +175,15 @@
     libs += [ "android" ]
     deps += [ "//ui/android:ui_java" ]
   }
+}
+
+# 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") {
@@ -313,6 +329,15 @@
   ]
 }
 
+# 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.