Require build directories exist for some GN commands.

tools/gn/command_check.cc

 // Copyright 2014 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/commands.h"
 #include "tools/gn/header_checker.h"
 #include "tools/gn/setup.h"
 #include "tools/gn/standard_out.h"
 #include "tools/gn/trace.h"
 
@@ skipping 33 matching lines @@
 
 int RunCheck(const std::vector<std::string>& args) {
   if (args.size() != 1 && args.size() != 2) {
     Err(Location(), "You're holding it wrong.",
         "Usage: \"gn check <out_dir> [<target_label>]\"").PrintToStdout();
     return 1;
   }
 
   // Deliberately leaked to avoid expensive process teardown.
   Setup* setup = new Setup();
-  if (!setup->DoSetup(args[0]))
+  if (!setup->DoSetup(args[0], false))
     return 1;
   if (!setup->Run())
     return 1;
 
   std::vector<const Target*> targets_to_check;
   if (args.size() == 2) {
     // Compute the target to check (empty means everything).
     if (!ResolveTargetsFromCommandLinePattern(setup, args[1], false,
                                               &targets_to_check))
       return 1;
@@ skipping 29 matching lines @@
   header_checker->Run(to_check, force_check, &header_errors);
   for (size_t i = 0; i < header_errors.size(); i++) {
     if (i > 0)
       OutputString("___________________\n", DECORATION_YELLOW);
     header_errors[i].PrintToStdout();
   }
   return header_errors.empty();
 }
 
 }  // namespace commands