Version 3.31.54 (based on 6459dabdaeaa5bec7ce6b83b7aafc43942a8cd8e)

Implement Array.from() (issue 3336).

move v8_use_external_startup_data to standalone.gypi (Chromium issue 421063).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/candidates@{#25329}