Fix compilation of uber-fat binaries.

build/config/ios/rules.gni

 # 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("//build/config/ios/ios_sdk.gni")
 import("//build/config/mac/base_rules.gni")
 import("//build/config/mac/symbols.gni")
 
 # Invokes lipo on multiple arch-specific binaries to create a fat binary.
 #
@@ skipping 380 matching lines @@
                              "info_plist",
                              "info_plist_target",
                              "output_name",
                              "product_type",
                              "visibility",
                            ])
 
     visibility = [ ":$_arch_executable_target" ]
   }
 
-  if (use_ios_simulator) {
+  if (current_toolchain == default_toolchain || use_ios_simulator) {
     _generate_entitlements_target = _target_name + "_gen_entitlements"
     _generate_entitlements_output =
         get_label_info(":$_generate_entitlements_target($default_toolchain)",
                        "target_out_dir") + "/$_output_name.xcent"
   }
 
   executable(_arch_executable_target) {
     forward_variables_from(invoker,
                            "*",
                            [
@@ skipping 103 matching lines @@
       forward_variables_from(invoker,
                              [
                                "extra_substitutions",
                                "info_plist",
                                "info_plist_target",
                              ])
 
       executable_name = _output_name
     }
 
-    if (use_ios_simulator) {
+    if (current_toolchain == default_toolchain) {
       _entitlements_path = "//build/config/ios/entitlements.plist"
       if (defined(invoker.entitlements_path)) {
         _entitlements_path = invoker.entitlements_path
       }
 
       action(_generate_entitlements_target) {
         _gen_info_plist_outputs = get_target_outputs(":$_generate_info_plist")
         _info_plist_path = _gen_info_plist_outputs[0]
 
         script = "//build/config/ios/codesign.py"
@@ skipping 805 matching lines @@
       "-rpath",
       "-Xlinker",
       "@loader_path/Frameworks",
     ]
   }
 }
 
 set_defaults("ios_xctest_test") {
   configs = default_executable_configs
 }