Move the GN bots to the CQ pool for tryserver.chromium.mac.
Move the GN bots to the CQ pool for tryserver.chromium.mac.

R=phajdan.jr@chromium.org, sergeyberezin@chromium.org
BUG=439402

Review URL: https://codereview.chromium.org/797723009

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293642 0039d316-1c4b-4281-b951-d872f2087c98

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