Convert Pass()→std::move() in //tools

tools/gn/build_settings.h

 // 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.
 
 #ifndef TOOLS_GN_BUILD_SETTINGS_H_
 #define TOOLS_GN_BUILD_SETTINGS_H_
 
 #include <map>
 #include <set>
+#include <utility>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "tools/gn/args.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/source_dir.h"
 #include "tools/gn/source_file.h"
 
@@ skipping 64 matching lines @@
   // console.
   const PrintCallback& print_callback() const { return print_callback_; }
   void set_print_callback(const PrintCallback& cb) { print_callback_ = cb; }
 
   // A list of files that can call exec_script(). If the returned pointer is
   // null, exec_script may be called from anywhere.
   const std::set<SourceFile>* exec_script_whitelist() const {
     return exec_script_whitelist_.get();
   }
   void set_exec_script_whitelist(scoped_ptr<std::set<SourceFile>> list) {
-    exec_script_whitelist_ = list.Pass();
+    exec_script_whitelist_ = std::move(list);
   }
 
   // When set (the default), code should perform normal validation of inputs
   // and structures, like undefined or possibly incorrectly used things. For
   // some interrogation commands, we don't care about this and actually want
   // to allow the user to check the structure of the build to solve their
   // problem, and these checks are undesirable.
   bool check_for_bad_items() const {
     return check_for_bad_items_;
   }
@@ skipping 15 matching lines @@
   PrintCallback print_callback_;
 
   scoped_ptr<std::set<SourceFile>> exec_script_whitelist_;
 
   bool check_for_bad_items_;
 
   BuildSettings& operator=(const BuildSettings& other);  // Disallow.
 };
 
 #endif  // TOOLS_GN_BUILD_SETTINGS_H_