[iOS] Define global assert_no_deps and use it to prevent regressions.

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")
 
 # TODO(crbug.com/297668): refactor this template to extract common behaviour
 # between OS X and iOS bundle generation, then create a generic "app" template
 # that forward to "executable" on all platform except iOS/OS X.
 
@@ skipping 82 matching lines @@
   }
 
   _generate_executable = target_name + "_generate_executable"
   _bundle_data_executable = target_name + "_bundle_data_executable"
 
   executable(_generate_executable) {
     visibility = [ ":$_bundle_data_executable" ]
     forward_variables_from(invoker,
                            "*",
                            [
-                             "output_name",
+                             "assert_no_deps",
                              "code_signing_identity",
                              "data_deps",
                              "entitlements_path",
                              "info_plist",
+                             "output_name",
                              "visibility",
                            ])
 
     output_name = rebase_path("$target_gen_dir/$_output_name", root_build_dir)
     if (!defined(libs)) {
       libs = []
     }
     libs += [ "UIKit.framework" ]
   }
 
@@ skipping 41 matching lines @@
     bundle_executable_dir = bundle_root_dir
     bundle_plugins_dir = "$bundle_root_dir/Plugins"
   }
 
   # TODO(crbug.com/297668):
   # - add support for codesigning,
   # - find a way to make "ninja -C out/Default base_unittests.app" work as
   #   an alias to "ninja -C out/Default base_unittests" (for convenience
   #   and compatibility with gyp),
 }