Convert Pass()→std::move() in //tools

tools/gn/builder.cc

Index: tools/gn/builder.cc
diff --git a/tools/gn/builder.cc b/tools/gn/builder.cc
index 5af7c3df5a58c2a8fec245e465d5542b9742629f..a05493b9e40e52f513807ad656efc8950ab12f9c 100644
--- a/tools/gn/builder.cc
+++ b/tools/gn/builder.cc
@@ -5,6 +5,7 @@
 #include "tools/gn/builder.h"
 
 #include <stddef.h>
+#include <utility>
 
 #include "tools/gn/config.h"
 #include "tools/gn/deps_iterator.h"
@@ -82,7 +83,7 @@ void Builder::ItemDefined(scoped_ptr<Item> item) {
     return;
   }
 
-  record->set_item(item.Pass());
+  record->set_item(std::move(item));
 
   // Do target-specific dependency setup. This will also schedule dependency
   // loads for targets that are required.