Linux: Update Debian Wheezy sysroot package data, also include libpcap.

BUG=312380
R=mmoss@chromium.org

Review URL: https://codereview.chromium.org/51383005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232730 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232730