Add //ui/* to "gn check"

ipc/BUILD.gn

 # Copyright (c) 2012 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("//build/config/nacl/config.gni")
 import("//testing/test.gni")
 
 component("ipc") {
   sources = [
     "attachment_broker.cc",
@@ skipping 49 matching lines @@
     "ipc_message_attachment.cc",
     "ipc_message_attachment.h",
     "ipc_message_attachment_set.cc",
     "ipc_message_attachment_set.h",
     "ipc_message_generator.cc",
     "ipc_message_generator.h",
     "ipc_message_macros.h",
     "ipc_message_start.h",
     "ipc_message_utils.cc",
     "ipc_message_utils.h",
-    "ipc_param_traits.h",
     "ipc_platform_file.cc",
     "ipc_platform_file.h",
     "ipc_platform_file_attachment_posix.cc",
     "ipc_platform_file_attachment_posix.h",
     "ipc_sender.h",
     "ipc_switches.cc",
     "ipc_switches.h",
     "ipc_sync_channel.cc",
     "ipc_sync_channel.h",
     "ipc_sync_message.cc",
@@ skipping 32 matching lines @@
       "ipc_channel_nacl.h",
     ]
   }
 
   if (is_win || is_ios || is_nacl_nonsfi) {
     sources -= [ "unix_domain_socket_util.cc" ]
   }
 
   defines = [ "IPC_IMPLEMENTATION" ]
 
+  public_deps = [
+    ":param_traits",
+  ]
   deps = [
     "//base",
 
     # TODO(viettrungluu): Needed for base/lazy_instance.h, which is suspect.
     "//base/third_party/dynamic_annotations",
   ]
 
   if (is_win || is_mac) {
     # On Windows HandleAttachmentWin needs to generate random IDs.
     # On Mac MachPortAttachmentMac needs to generate random IDs.
     deps += [ "//crypto" ]
   }
 }
 
+# This is provided as a separate target so other targets can provide param
+# traits implementations without necessarily linking to all of IPC.
+source_set("param_traits") {
+  public = [
+    "ipc_param_traits.h",
+  ]
+}
+
 group("ipc_tests_run") {
   testonly = true
   deps = [
     ":ipc_tests",
   ]
 }
 
 test("ipc_tests") {
   sources = [
     "attachment_broker_mac_unittest.cc",
@@ skipping 85 matching lines @@
     "ipc_security_test_util.h",
     "ipc_test_base.cc",
     "ipc_test_base.h",
     "ipc_test_channel_listener.cc",
     "ipc_test_channel_listener.h",
     "ipc_test_sink.cc",
     "ipc_test_sink.h",
     "test_util_mac.cc",
     "test_util_mac.h",
   ]
+  public_deps = [
+    ":ipc",
+  ]
   deps = [
-    ":ipc",
     "//base",
     "//base/test:test_support",
     "//testing/gtest",
   ]
 }