Commits on May 20, 2020

1. deps: V8: cherry-pick 548f6c81d424 …

   Original commit message:
   
       [runtime] Don't track transitions for certainly detached maps
   
       Previously such maps were marked as prototype, but that has bad
       performance / memory characteristics if objects are used as
       dictionaries.
   
       Bug: b:148346655, v8:10339
       Change-Id: I287c5664c8b7799a084669aaaffe3affcf73e95f
       Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2179322
       Reviewed-by: Igor Sheludko <ishell@chromium.org>
       Commit-Queue: Toon Verwaest <verwaest@chromium.org>
       Cr-Commit-Position: refs/heads/master@{#67537}
   
   Refs: v8/v8@548f6c8

   

   dominykas committed May 20, 2020
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