port 4598d913 (r38747)

  original commit message:
  This fixes the self-healing mechanism for closures in the interpreter
  entry trampoline not that bytecode can be preserved even when baseline
  code is already available.

BUG=

Review-Url: https://codereview.chromium.org/2273503003
Cr-Commit-Position: refs/heads/master@{#38856}