Land prep work to enable NaCl in the Linux x64 GN builds.

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("//testing/test.gni")
 
 component("ipc") {
   sources = [
     "ipc_channel.cc",
     "ipc_channel.h",
@@ skipping 49 matching lines @@
     "param_traits_log_macros.h",
     "param_traits_macros.h",
     "param_traits_read_macros.h",
     "param_traits_write_macros.h",
     "struct_constructor_macros.h",
     "struct_destructor_macros.h",
     "unix_domain_socket_util.cc",
     "unix_domain_socket_util.h",
   ]
 
-  if (!is_nacl) {
+  if (is_nacl) {
+    sources -= [
+      "ipc_channel.cc",
+      "ipc_channel_posix.cc",
+      "unix_domain_socket_util.cc",
+    ]
+  } else {
     sources -= [
       "ipc_channel_nacl.cc",
       "ipc_channel_nacl.h",
     ]
   }
 
   if (is_win || is_ios) {
     sources -= [ "unix_domain_socket_util.cc" ]
   }
 
   defines = [ "IPC_IMPLEMENTATION" ]
 
   deps = [
     "//base",
 
     # TODO(viettrungluu): Needed for base/lazy_instance.h, which is suspect.
     "//base/third_party/dynamic_annotations",
   ]
 }
 
-# TODO(dpranke): crbug.com/360936. Get this to build and run on Android.
+# TODO(GYP): crbug.com/360936. Get this to build and run on Android.
 if (!is_android) {
   test("ipc_tests") {
     sources = [
       "ipc_channel_posix_unittest.cc",
       "ipc_channel_unittest.cc",
       "ipc_fuzzing_tests.cc",
       "ipc_message_attachment_set_posix_unittest.cc",
       "ipc_message_unittest.cc",
       "ipc_message_utils_unittest.cc",
       "ipc_send_fds_test.cc",
@@ skipping 40 matching lines @@
     #if (is_android && gtest_target_type == "shared_library") {
     #  deps += "/testing/android/native_test.gyp:native_testNative_code"
     #}
 
     # TODO(brettw) hook up tcmalloc to this target.
     #if (is_posix && !is_mac && !is_android) {
     #  if (use_allocator!="none") {
     #    deps += "//base/allocator"
     #  }
     #}
-
     deps = [
       ":ipc",
       ":test_support",
       "//base",
       "//base:i18n",
       "//base/test:test_support",
       "//base/test:test_support_perf",
       "//testing/gtest",
     ]
   }
@@ skipping 15 matching lines @@
     "ipc_test_sink.cc",
     "ipc_test_sink.h",
   ]
   deps = [
     ":ipc",
     "//base",
     "//base/test:test_support",
     "//testing/gtest",
   ]
 }