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The pool has plenty of 4-cores for extra builds: http://shortn/_koR1dg8Vvu
Also the host pool also has plenty of rooms: http://shortn/_xqhW5Z67ft

Bug: 997376, 1127110
Change-Id: I56b432d960c2f1821934667ac2f38d3fcb4705bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2450331Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/master@{#813888}