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The removed code does not do anything useful -- it just churns the
reference counts and that's it.

Change-Id: I80ec8a5d559ae966038cf56d2e8606a0bb0f0201
Reviewed-on: https://chromium-review.googlesource.com/1104081Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Commit-Queue: Yuta Kitamura <yutak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568358}