Separate out target defaults in the GN build config.

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")
 
 # Generates Info.plist files for Mac apps and frameworks.
 #
 # Arguments
@@ skipping 420 matching lines @@
   }
   if (defined(invoker.info_plist_target)) {
     assert(invoker.info_plist_target != "",
            "mark invoker.info_plist_target as used")
   }
   if (defined(invoker.product_type)) {
     assert(invoker.product_type != "", "mark product_type as used")
   }
 }
 
+set_defaults("ios_app_bundle") {
+  configs = default_executable_configs
+}
+
 # Template to build an application extension bundle for iOS.
 #
 # This should be used instead of "executable" built-in target type on iOS.
 # As the template forward the generation of the application executable to
 # an "executable" target, all arguments supported by "executable" targets
 # are also supported by this template.
 #
 # Arguments
 #
 #   output_name:
@@ skipping 32 matching lines @@
       ldflags = []
     }
     ldflags += [
       "-e",
       "_NSExtensionMain",
       "-fapplication-extension",
     ]
   }
 }
 
+set_defaults("ios_appex_bundle") {
+  configs = default_executable_configs
+}
+
 # Compile a xib or storyboard file and add it to a bundle_data so that it is
 # available at runtime in the bundle.
 #
 # Arguments
 #
 #   source:
 #       string, path of the xib or storyboard to compile.
 #
 # Forwards all variables to the bundle_data target.
 template("bundle_data_xib") {
@@ skipping 274 matching lines @@
                              [
                                "testonly",
                                "visibility",
                              ])
       public_deps = [
         ":$_framework_target+link",
       ]
     }
   }
 }
+
+set_defaults("ios_framework_bundle") {
+  configs = default_shared_library_configs
+}