Scripts should not care about closed tree when committing.

tools/push-to-trunk.sh

 #!/bin/bash
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 193 matching lines @@
   cat ChangeLog | awk --posix '{
     if ($0 ~ /^[0-9]{4}-[0-9]{2}-[0-9]{2}:/) {
       if (in_firstblock == 1) {
         exit 0;
       } else {
         in_firstblock = 1;
       }
     };
     print $0;
   }' > "$CHANGELOG_ENTRY_FILE"
-  git cl dcommit || die "'git cl dcommit' failed, please try again."
+  PRESUBMIT_TREE_CHECK="skip" git cl dcommit \
+    || die "'git cl dcommit' failed, please try again."
 fi
 
 let CURRENT_STEP+=1
 if [ $START_STEP -le $CURRENT_STEP ] ; then
   echo ">>> Step $CURRENT_STEP: Fetch straggler commits that sneaked in \
 since this script was started."
   git svn fetch || die "'git svn fetch' failed."
   git checkout svn/bleeding_edge
   restore_if_unset "PREPARE_COMMIT_MSG"
   PREPARE_COMMIT_HASH=$(git log -1 --format=%H --grep="$PREPARE_COMMIT_MSG")
@@ skipping 177 matching lines @@
 update the v8rel spreadsheet:"
   else
     echo "Congratulations, you have successfully created the trunk revision \
 $MAJOR.$MINOR.$BUILD. Please don't forget to roll this new version into \
 Chromium, and to update the v8rel spreadsheet:"
   fi
   echo -e "$MAJOR.$MINOR.$BUILD\ttrunk\t$TRUNK_REVISION"
   common_cleanup
   [[ "$TRUNKBRANCH" != "$CURRENT_BRANCH" ]] && git branch -D $TRUNKBRANCH
 fi