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1-based reference counting is recommended, and helps catch some bugs where a new reference is created after an object's reference count reaches zero. Change-Id: Ib2bf2d1c176b10c0b07d9824f992b6078e357c81 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3096949 Auto-Submit: Victor Costan <pwnall@chromium.org> Reviewed-by: Austin Sullivan <asully@chromium.org> Commit-Queue: Austin Sullivan <asully@chromium.org> Cr-Commit-Position: refs/heads/master@{#912324}