[GN] Add support for generating Xcode projects.

tools/gn/functions_target.cc

 // Copyright (c) 2013 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.
 
 #include "tools/gn/functions.h"
 
 #include "tools/gn/config_values_generator.h"
 #include "tools/gn/err.h"
 #include "tools/gn/parse_tree.h"
 #include "tools/gn/scope.h"
@@ skipping 313 matching lines @@
     "  The \"bundle_*_dir\" properties must be defined. They will be used for\n"
     "  the expansion of {{bundle_*_dir}} rules in \"bundle_data\" outputs.\n"
     "\n"
     "  This target can be used on all platforms though it is designed only to\n"
     "  generate iOS/OS X bundle. In cross-platform projects, it is advised to\n"
     "  put it behind iOS/Mac conditionals.\n"
     "\n"
     "Variables\n"
     "\n"
     "  bundle_root_dir*, bundle_resources_dir*, bundle_executable_dir*,\n"
-    "  bundle_plugins_dir*, deps, data_deps, public_deps, visibility\n"
+    "  bundle_plugins_dir*, deps, data_deps, public_deps, visibility,\n"
+    "  product_type\n"
     "  * = required\n"
     "\n"
     "Example\n"
     "\n"
     "  # Defines a template to create an application. On most platform, this\n"
     "  # is just an alias for an \"executable\" target, but on iOS/OS X, it\n"
     "  # builds an application bundle.\n"
     "  template(\"app\") {\n"
     "    if (!is_ios && !is_mac) {\n"
     "      executable(target_name) {\n"
@@ skipping 26 matching lines @@
     "            rebase_path(\"$gen_path/$app_name\", root_build_dir)\n"
     "      }\n"
     "\n"
     "      bundle_data(\"${app_name}_bundle_executable\") {\n"
     "        deps = [ \":${app_name}_generate_executable\" ]\n"
     "        sources = [ \"$gen_path/$app_name\" ]\n"
     "        outputs = [ \"{{bundle_executable_dir}}/$app_name\" ]\n"
     "      }\n"
     "\n"
     "      create_bundle(\"${app_name}.app\") {\n"
+    "        product_type = \"com.apple.product-type.application\"\n"
     "        deps = [\n"
     "          \":${app_name}_bundle_executable\",\n"
     "          \":${app_name}_bundle_info_plist\",\n"
     "        ]\n"
     "        if (is_ios) {\n"
     "          bundle_root_dir = \"${root_build_dir}/$target_name\"\n"
     "          bundle_resources_dir = bundle_root_dir\n"
     "          bundle_executable_dir = bundle_root_dir\n"
     "          bundle_plugins_dir = bundle_root_dir + \"/Plugins\"\n"
     "        } else {\n"
@@ skipping 334 matching lines @@
   const Template* templ = scope->GetTemplate(target_type);
   if (templ)
     return templ->Invoke(scope, function, sub_args, block, err);
 
   // Otherwise, assume the target is a built-in target type.
   return ExecuteGenericTarget(target_type.c_str(), scope, function, sub_args,
                               block, err);
 }
 
 }  // namespace functions