Revert r240867 "Remove untracked dependency "lib32" from browser_tests.isolate"
Revert r241063 "Remove stale 'lib64' entries in browser_tests.isolate and chrome.isolate on linux"

These directories get created on a clobber build.

R=szym@chromium.org, yoz@chromium.org
BUG=

Review URL: https://codereview.chromium.org/115953005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241094 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241094