Dispose of MIDIAccessInitializer on contextDestroyed() notification.

If a contextDestroyed() notification is issued, dispose of the
MIDIAccessInitializer then. With Oilpan enabled, this can be the last
opportunity to dispose via the ExecutionContext, as the weak reference
to the context may well have been cleared by the time the prefinalizer
runs.

R=haraken
BUG=420515

Review URL: https://codereview.chromium.org/864943003

git-svn-id: svn://svn.chromium.org/blink/trunk@189204 bbb929c8-8fbe-4397-9dbb-9b2b20218538
2 files changed
tree: 2de544869fbcbf2753392d3fe872319af52f992e
  1. third_party/