Make CrWinClangLLD bot do 32-bit builds, add a CrWinClangLLD64 bot.

BUG=82385

Review URL: https://codereview.chromium.org/1257683007

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/build@296139 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed