Fixed some problems with tools.

build/android/adb_gdb

 #!/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.
 #
 
 # A generic script used to attach to a running Chromium process and
 # debug it. Most users should not use this directly, but one of the
 # wrapper scripts like adb_gdb_content_shell
 #
 # Use --help to print full usage instructions.
 #
 
 PROGNAME=$(basename "$0")
 PROGDIR=$(dirname "$0")
 
 # Location of Chromium-top-level sources.
-CHROMIUM_SRC=$(cd "$PROGDIR"/../.. && pwd 2>/dev/null)
+CHROMIUM_SRC=$(cd "$PROGDIR"/../.. >/dev/null && pwd 2>/dev/null)
 
 # Location of Chromium out/ directory.
 if [ -z "$CHROMIUM_OUT_DIR" ]; then
   CHROMIUM_OUT_DIR=out
 fi
 
 TMPDIR=
 GDBSERVER_PIDFILE=
 TARGET_GDBSERVER=
 
@@ skipping 954 matching lines @@
 if [ "$GDBINIT" ]; then
   cat "$GDBINIT" >> $COMMANDS
 fi
 
 if [ "$VERBOSE" -gt 0 ]; then
   echo "### START $COMMANDS"
   cat $COMMANDS
   echo "### END $COMMANDS"
 fi
 
-log "Launching gdb client: $GDB $GDBARGS -x $COMMANDS"
-$GDB $GDBARGS -x $COMMANDS &&
+log "Launching gdb client: $GDB $GDB_ARGS -x $COMMANDS"
+$GDB $GDB_ARGS -x $COMMANDS &&
 rm -f "$GDBSERVER_PIDFILE"