Convert Pass()→std::move() in //tools

tools/gn/setup.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/setup.h"
 
 #include <stdlib.h>
-
 #include <algorithm>
 #include <sstream>
+#include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/process/launch.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
@@ skipping 624 matching lines @@
       if (!item.VerifyTypeIs(Value::STRING, &err)) {
         err.PrintToStdout();
         return false;
       }
       whitelist->insert(current_dir.ResolveRelativeFile(item, &err));
       if (err.has_error()) {
         err.PrintToStdout();
         return false;
       }
     }
-    build_settings_.set_exec_script_whitelist(whitelist.Pass());
+    build_settings_.set_exec_script_whitelist(std::move(whitelist));
   }
 
   return true;
 }