GN: Use the correct defaults for templates invoked via target().

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 755 matching lines @@
   if (!args[0].VerifyTypeIs(Value::STRING, err))
     return Value();
   const std::string& target_type = args[0].string_value();
 
   // The rest of the args are passed to the function.
   std::vector<Value> sub_args(args.begin() + 1, args.end());
 
   // Run a template if it is one.
   const Template* templ = scope->GetTemplate(target_type);
   if (templ)
-    return templ->Invoke(scope, function, sub_args, block, err);
+    return templ->Invoke(scope, function, target_type, 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