Revert "DevTools: fixed scheduleStepInto for Node 8.x"
Revert "DevTools: fixed scheduleStepInto for Node 8.x"

This reverts commit 99590e1f710fa3ea34e4f9d590ddcd9ba25aa33d.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> DevTools: fixed scheduleStepInto for Node 8.x
> 
> Node 8.x does not support breakOnAsyncCall param of
> Debugger.stepInto method.
> 
> R=​dgozman@chromium.org
> 
> Bug: none
> Change-Id: I0e59e0a3742b85a2fd466ac1bac5f7b75aa7f841
> Reviewed-on: https://chromium-review.googlesource.com/c/1352533
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <562acbea96970f508ad9f5cc9fc7c62d82dd3ef8@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#612075}

TBR=dgozman@chromium.org,562acbea96970f508ad9f5cc9fc7c62d82dd3ef8@chromium.org

Change-Id: Id375af68281dd1316f907f2ea0ee9cfd07b3390e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: none
Reviewed-on: https://chromium-review.googlesource.com/c/1356126
Reviewed-by: Aleksey Kozyatinskiy <562acbea96970f508ad9f5cc9fc7c62d82dd3ef8@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <562acbea96970f508ad9f5cc9fc7c62d82dd3ef8@chromium.org>
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#612449}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a5ca5e27fe22feb735f00fcff4e6b72e91c2a9d7
dart-archive/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend