Chromium roll (https://codereview.chromium.org/976353002)

services/nacl/BUILD.gn

 # Copyright 2015 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("//mojo/public/mojo_application.gni")
 
 # Trusted code
 if (!is_nacl) {
   mojo_native_application("nacl_content_handler") {
     sources = [
       "content_handler_main.cc",
     ]
 
     deps = [
       "//base",
       "//mojo/application:application",
       "//mojo/application:content_handler",
       "//mojo/common",
       "//mojo/services/network/public/interfaces",
       "//nacl_bindings:monacl_sel",
       "//url",
     ]
 
-    data_deps = [ "//nacl_bindings:irt_mojo(//native_client/build/toolchain/nacl:irt_${cpu_arch})" ]
+    data_deps = [ "//nacl_bindings:irt_mojo(//native_client/build/toolchain/nacl:irt_${target_cpu})" ]
   }
 }