Switch MSan LKGR bots to pre-built instrumented libraries.
Switch MSan LKGR bots to pre-built instrumented libraries.

BUG=462636
TBR=glider@chromium.org

Review URL: https://codereview.chromium.org/1031923002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@294557 0039d316-1c4b-4281-b951-d872f2087c98

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