Add iossim as data_deps for iOS application bundles.

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 129 matching lines @@
                            ])
 
     if (!defined(deps)) {
       deps = []
     }
     deps += [
       ":$_bundle_data_executable",
       ":$_bundle_data_info_plist",
     ]
 
+    if (use_ios_simulator) {
+      if (!defined(data_deps)) {
+        data_deps = []
+      }
+      data_deps += [ "//testing/iossim(${host_toolchain})" ]
+    }
+
     bundle_root_dir = "$root_out_dir/$_app_name.app"
     bundle_resources_dir = bundle_root_dir
     bundle_executable_dir = bundle_root_dir
     bundle_plugins_dir = "$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),
-  # - implement //testing/iossim(//build/toolchain/mac:clang_x64) and then
-  #   add a depency to that target.
 }