Add 32-bit Linux testers to LKGR finder.
Add 32-bit Linux testers to LKGR finder.

BUG=none

Review URL: https://codereview.chromium.org/92463002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@238170 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build