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The callback uses a local variable 'released', but 'released' had
a more narrow scope than the owner of the callback (and it's called
from the destructor, when 'released' is already out of scope)

BUG=649897
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Review-Url: https://codereview.chromium.org/2596593003
Cr-Commit-Position: refs/heads/master@{#439888}