The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/dd850c3137e8c21096c26b0b20a666b7a8504621

commit dd850c3137e8c21096c26b0b20a666b7a8504621
Author: Alexey Kozyatinskiy <kozyatinskiy@chromium.org>
Date: Fri Mar 09 03:39:58 2018

[DevTools] allow nested command processing

It allows to break infinite loops started using Runtime.evaluate, e.g.
from console.

R=dgozman@chromium.org

Bug:  chromium:820258 
Change-Id: I9110ba6db50b60b803b2ec50291d31b854e216bf
Reviewed-on: https://chromium-review.googlesource.com/956525
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542014}
[add] https://crrev.com/dd850c3137e8c21096c26b0b20a666b7a8504621/third_party/WebKit/LayoutTests/http/tests/devtools/sources/debugger-pause/debugger-pause-infinite-loop-expected.txt
[add] https://crrev.com/dd850c3137e8c21096c26b0b20a666b7a8504621/third_party/WebKit/LayoutTests/http/tests/devtools/sources/debugger-pause/debugger-pause-infinite-loop.js
[modify] https://crrev.com/dd850c3137e8c21096c26b0b20a666b7a8504621/third_party/WebKit/Source/core/exported/WebDevToolsAgentImpl.cpp