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This reverts commit 69538c3b.

As described in the bug, the proposed approach is invalid, as Blink's bindings
code isn't ready to deal with terminated scripts properly, resulting in random
crashes. Hence reverting the patch.

BUG=390906

Review URL: https://codereview.chromium.org/534093004

Cr-Commit-Position: refs/heads/master@{#293146}