Attached is a screenshot of replace menu in question.

FYI: I've attempted to remove this functionality altogether, but it seemed to be occasionally used (https://crrev.com/2179543005/)

Deleted: replace-menu.png 61.8 KB

	replace-menu.png 61.8 KB View Download

Description doesn't mention that we should have a separate replace UI (two lines, all nice and aligned) and command menu items for search and replace.

 Issue 666237  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cf01fc727b00540e6bbd5959fa8e63df2477a4a9

commit cf01fc727b00540e6bbd5959fa8e63df2477a4a9
Author: Erik Luo <luoe@chromium.org>
Date: Mon Dec 04 20:42:56 2017

DevTools: revamp replace UI in searchable view

- Remove redundant Find/Previous buttons
- Replace "Replace" checkbox with cool icon
- 'Replace all' button is disabled when 'Replace' is
  also disabled

Screnshot: https://imgur.com/a/gp0SZ

Bug:  631163 
Change-Id: I98f2ca5b8e504d13d85057a80fa5bb9cf60c6118
Reviewed-on: https://chromium-review.googlesource.com/769991
Commit-Queue: Erik Luo <luoe@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521438}
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/LayoutTests/http/tests/devtools/editor/text-editor-search-replace.js
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/Images/mediumIcons.png
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/Images/mediumIcons_2x.png
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/Images/src/mediumIcons.svg
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/Images/src/optimize_png.hashes
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/Images/src/svg2png.hashes
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/sources_test_runner/SearchTestRunner.js
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/ui/Icon.js
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/ui/SearchableView.js
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/ui/searchableView.css
[modify] https://crrev.com/cf01fc727b00540e6bbd5959fa8e63df2477a4a9/third_party/WebKit/Source/devtools/front_end/ui/toolbar.css

One thing mentioned in the description that was not changed is the context menu.  Concerns were raised that the Sources context menu is already packed, and the visual noise from 2 extra options would not be worth the convenience.