Taken from the patch[1]:

Only four failures:
1 editing/inserting/insert-composition-whitespace.html
2 editing/inserting/insert-html-crash.html
3 editing/style/apply-through-end-of-document.html
4 fast/spatial-navigation/snav-z-index.html

It is fewer than expected. :-)


[1] http://crrev.com/2705373002: Remove unnecessary layout updates from InsertInto/DeleteFromTextNodeCommand

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7a0a5316f12d0873b3c17a29157b703cf4f1ae36

commit 7a0a5316f12d0873b3c17a29157b703cf4f1ae36
Author: xiaochengh <xiaochengh@chromium.org>
Date: Wed Feb 22 08:42:34 2017

Remove unnecessary layout updates from InsertInto/DeleteFromTextNodeCommand

InsertInto/DeleteFromTextNodeCommand used to update layout at the
end of doApply() and unApply(), which is bad because the client
of the clean layout is unclear, and unnecessary layout updates
may be performed.

This patch removes these layout update calls, and explicitly updates
layout before clients.

BUG= 694816 
TEST=n/a; no behavior change

Review-Url: https://codereview.chromium.org/2705373002
Cr-Commit-Position: refs/heads/master@{#451936}

[modify] https://crrev.com/7a0a5316f12d0873b3c17a29157b703cf4f1ae36/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
[modify] https://crrev.com/7a0a5316f12d0873b3c17a29157b703cf4f1ae36/third_party/WebKit/Source/core/editing/commands/DeleteFromTextNodeCommand.cpp
[modify] https://crrev.com/7a0a5316f12d0873b3c17a29157b703cf4f1ae36/third_party/WebKit/Source/core/editing/commands/InsertIntoTextNodeCommand.cpp
[modify] https://crrev.com/7a0a5316f12d0873b3c17a29157b703cf4f1ae36/third_party/WebKit/Source/core/editing/commands/InsertLineBreakCommand.cpp
[modify] https://crrev.com/7a0a5316f12d0873b3c17a29157b703cf4f1ae36/third_party/WebKit/Source/core/editing/commands/InsertTextCommand.cpp
[modify] https://crrev.com/7a0a5316f12d0873b3c17a29157b703cf4f1ae36/third_party/WebKit/Source/core/editing/commands/ReplaceSelectionCommand.cpp