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This is to fix number of regressions in browsing/rendering_desktop
benchmarks which occurred after heap collections became trivially
finalizable.

Bug: 1002372
Change-Id: I61267729c616e9cb83d5c3ccb61699fdae6d1cb2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1807120Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#697585}