Increase valgrind's redzone from 16 to 64 bytes....

tools/valgrind/chrome_tests.sh

 #!/bin/sh
 
 # Copyright (c) 2009 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.
 
 # Select the valgrind built by build-valgrind-for-chromium.sh by default,
 # but allow users to override this default without editing scripts and
 # without specifying a commandline option
 
 if test x"$CHROME_VALGRIND_BIN" = x
 then
   # Figure out which valgrind is installed.  Use most recent one.
   # See build-valgrind-for-chromium.sh and its history for these constants.
-  for SVNREV in '10880' '10771' '{2009-07-15}'
+  for SVNREV in '10880-redzone' '10880' '10771' '{2009-07-15}'
   do
     SHORTSVNREV=`echo $SVNREV | tr -d '{\-}'`
     CHROME_VALGRIND_BIN=/usr/local/valgrind-$SHORTSVNREV/bin
     test -x $CHROME_VALGRIND_BIN/valgrind && break
   done
 fi
 
 if ! test -x $CHROME_VALGRIND_BIN/valgrind
 then
   echo "Could not find chromium's version of valgrind."
   echo "Please run build-valgrind-for-chromium.sh or set CHROME_VALGRIND_BIN."
   exit 1
 fi
 PATH="${CHROME_VALGRIND_BIN}:$PATH"
 
 export THISDIR=`dirname $0`
 PYTHONPATH=$THISDIR/../../webkit/tools/layout_tests/:$THISDIR/../purify:$THISDIR/../python "$THISDIR/chrome_tests.py" "$@"