[NaCl SDK] Re-enable 32-bit sel_ldr build for mac

chrome/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.
 
 import("//build/buildflag_header.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/sanitizers/sanitizers.gni")
@@ skipping 796 matching lines @@
 
   if (enable_nacl) {
     bundle_data("chrome_framework_plugins") {
       sources = []
       outputs = [
         "{{bundle_root_dir}}/Internet Plug-Ins/{{source_file_part}}",
       ]
       public_deps = []
 
       if (enable_nacl) {
-        sources += [ "$root_out_dir/nacl_irt_x86_64.nexe" ]
+        if (current_cpu == "x86") {
+          sources += [ "$root_out_dir/nacl_irt_x86_32.nexe" ]
+        } else if (current_cpu == "x64") {
+          sources += [ "$root_out_dir/nacl_irt_x86_64.nexe" ]
+        }
         public_deps += [ "//ppapi/native_client:irt" ]
       }
     }
   } else {
     group("chrome_framework_plugins") {
     }
   }
 
   _should_bundle_widevine =
       (is_chrome_branded || enable_widevine) && enable_pepper_cdms
@@ skipping 754 matching lines @@
       "//chrome/app/theme/$branding_path_component/product_logo_48.png",
       "//chrome/tools/build/linux/chrome-wrapper",
       "//third_party/xdg-utils/scripts/xdg-mime",
       "//third_party/xdg-utils/scripts/xdg-settings",
     ]
     outputs = [
       "$root_out_dir/{{source_file_part}}",
     ]
   }
 }