Update the tcmalloc chromium branch to r144 (gperftools 2.0), and merge chromium-specific changes.

third_party/tcmalloc/chromium/src/tests/heap-checker-death_unittest.sh

 #!/bin/sh
 # Copyright (c) 2005, Google Inc.
 # 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.
@@ skipping 66 matching lines @@
   shift
   expected_regexp="$1"
   shift
   unexpected_regexp="$1"
   shift
 
   echo -n "Testing $EXE with $@ ... "
   output="$TMPDIR/output"
   ALARM $timeout env "$@" $EXE > "$output" 2>&1
   actual_ec=$?
-  ec_ok=$(expr "$actual_ec" : "$expected_ec$" >/dev/null || echo false)
-  matches_ok=$(test -z "$expected_regexp" || \
-               grep -q "$expected_regexp" "$output" || echo false)
-  negmatches_ok=$(test -z "$unexpected_regexp" || \
-                  ! grep -q "$unexpected_regexp" "$output" || echo false)
+  ec_ok=`expr "$actual_ec" : "$expected_ec$" >/dev/null || echo false`
+  matches_ok=`test -z "$expected_regexp" || \
+              grep "$expected_regexp" "$output" >/dev/null 2>&1 || echo false`
+  negmatches_ok=`test -z "$unexpected_regexp" || \
+                 ! grep "$unexpected_regexp" "$output" >/dev/null 2>&1 || echo false`
   if $ec_ok && $matches_ok && $negmatches_ok; then
     echo "PASS"
     return 0  # 0: success
   fi
   # If we get here, we failed.  Now we just need to report why
   echo "FAIL"
   if [ $actual_ec -eq 255 ]; then  # 255 == SIGTERM due to $ALARM
     echo "Test was taking unexpectedly long time to run and so we aborted it."
     echo "Try the test case manually or raise the timeout from $timeout"
     echo "to distinguish test slowness from a real problem."
@@ skipping 65 matching lines @@
 Test 60 1 "" "Starting tracking the heap" \
   HEAP_CHECKER_TEST_TEST_LEAK=1 HEAP_CHECKER_TEST_NO_THREADS=1 PERFTOOLS_VERBOSE=-10 \
   || exit 12
 
 cd /    # so we're not in TMPDIR when we delete it
 rm -rf $TMPDIR
 
 echo "PASS"
 
 exit 0