Previous commit incorrectly inlined ToIntegerImpl into ToInteger_Inline,
causing code bloat.

Bug: chromium:1059364
Change-Id: I7bc369255a29a7ea567fafc775835c37584905b3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2092843
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66637}