Adding isolate for cc_perftests and triggering job on FYI waterfall

BUG=chromium:633253
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2442663004
Cr-Commit-Position: refs/heads/master@{#428563}
5 files changed