This reverts commit f2f48bd8.

Reason for revert: Negative performance impact

Original change's description:
> [parser] Restructure Binary expression parsing
> 
> Change-Id: I1ff35a3e647b32edb229f47fde80de1b8b50737b
> Reviewed-on: https://chromium-review.googlesource.com/1240333
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56179}

TBR=ishell@chromium.org,verwaest@chromium.org

Change-Id: If08f8c5f538dc25f5f3ea62cd8dd80e024156e81
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/1241957Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56186}