Revert of [debugger] flood function for stepping before calling it. (patchset #7 id:120001 of https://codereview.chromium.org/1463803002/ )

Reason for revert:
[Sheriff] Breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/3074

Original issue's description:
> [debugger] flood function for stepping before calling it.
>
> R=verwaest@chromium.org
>
> Committed: https://crrev.com/93eb633214e0f97bf70ae30d2a07b7fbbaa78266
> Cr-Commit-Position: refs/heads/master@{#32285}

TBR=verwaest@chromium.org,mstarzinger@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1474943005

Cr-Commit-Position: refs/heads/master@{#32299}