valgrind: Fix running webkit-tests.

tools/valgrind/chrome_tests.sh

 #!/bin/bash
 
 # Copyright (c) 2012 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.
 
 # Set up some paths and re-direct the arguments to chrome_tests.py
 
 export THISDIR=`dirname $0`
 ARGV_COPY="$@"
@@ skipping 32 matching lines @@
       NEEDS_VALGRIND=1
     fi
     ;;
   "drmemory" | "drmemory_light" | "drmemory_full" | "drmemory_pattern")
     NEEDS_DRMEMORY=1
     ;;
 esac
 
 if [ "$NEEDS_VALGRIND" == "1" ]
 then
-  CHROME_VALGRIND=`sh $THISDIR/locate_valgrind.sh`
+  export CHROME_VALGRIND=`sh $THISDIR/locate_valgrind.sh`
   if [ "$CHROME_VALGRIND" = "" ]
   then
     # locate_valgrind.sh failed
     exit 1
   fi
   echo "Using valgrind binaries from ${CHROME_VALGRIND}"
 
   PATH="${CHROME_VALGRIND}/bin:$PATH"
   # We need to set these variables to override default lib paths hard-coded into
   # Valgrind binary.
@@ skipping 49 matching lines @@
 
     chmod +x "$TSAN_SFX"  # Cygwin won't run it without +x.
     "$TSAN_SFX" -o"$TSAN_PATH"/unpacked -y
     export PIN_COMMAND="$TSAN_PATH/unpacked/tsan-x86-windows/tsan.bat"
   fi
 fi
 
 
 PYTHONPATH=$THISDIR/../python/google python \
            "$THISDIR/chrome_tests.py" $ARGV_COPY