Add chrome test support target to GN build.

components/invalidation/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.
 
 static_library("invalidation") {
   sources = [
     "ack_handle.cc",
     "ack_handle.h",
     "ack_handler.cc",
     "ack_handler.h",
@@ skipping 72 matching lines @@
     "//components/pref_registry",
     "//components/signin/core/browser",
     "//google_apis",
     "//jingle:notifier",
     "//third_party/cacheinvalidation",
 
     # TODO(sync): Remove this (http://crbug.com/133352);
     "//third_party/protobuf:protobuf_lite",
     # "//third_party/cacheinvalidation/src/google/cacheinvalidation:cacheinvalidation_proto_cpp",
   ]
+
+  forward_dependent_configs_from = [
+    "//third_party/cacheinvalidation",
+  ]
 }
 
 static_library("test_support") {
   testonly = true
   sources = [
     "fake_invalidation_handler.cc",
     "fake_invalidation_handler.h",
     "fake_invalidation_state_tracker.cc",
     "fake_invalidation_state_tracker.h",
     "fake_invalidator.cc",
@@ skipping 25 matching lines @@
     "//jingle:notifier_test_util",
     "//net",
     "//testing/gmock",
     "//third_party/cacheinvalidation",
 
     # TODO(sync): Remove this (http://crbug.com/133352);
     "//third_party/protobuf:protobuf_lite",
     # "//third_party/cacheinvalidation/src/google/cacheinvalidation:cacheinvalidation_proto_cpp",
   ]
 }