GN: Always check for bad items.

tools/gn/command_desc.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 <stddef.h>
 
 #include <algorithm>
 #include <set>
 #include <sstream>
 
@@ skipping 412 matching lines @@
   if (args.size() != 2 && args.size() != 3) {
     Err(Location(), "You're holding it wrong.",
         "Usage: \"gn desc <out_dir> <target_name> [<what to display>]\"")
         .PrintToStdout();
     return 1;
   }
   const base::CommandLine* cmdline = base::CommandLine::ForCurrentProcess();
 
   // Deliberately leaked to avoid expensive process teardown.
   Setup* setup = new Setup;
-  setup->build_settings().set_check_for_bad_items(false);
   if (!setup->DoSetup(args[0], false))
     return 1;
   if (!setup->Run())
     return 1;
 
   // Resolve target(s) and config from inputs.
   UniqueVector<const Target*> target_matches;
   UniqueVector<const Config*> config_matches;
   UniqueVector<const Toolchain*> toolchain_matches;
   UniqueVector<SourceFile> file_matches;
@@ skipping 57 matching lines @@
 
       if (!PrintConfig(config, what_to_print, !multiple_outputs))
         return 1;
     }
   }
 
   return 0;
 }
 
 }  // namespace commands