The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e7727c85ef1e113d274a9328d93c4ef196e2fa7c

commit e7727c85ef1e113d274a9328d93c4ef196e2fa7c
Author: chongz <chongz@chromium.org>
Date: Wed Mar 29 16:05:19 2017

[InputEvent] Distinguish between soft line and hard line

This CL adds input types DeleteSoftLineForward/Backward for line boundary and
DeleteHardLineForward/Backward for paragraph boundary.

BUG= 705641 

Review-Url: https://codereview.chromium.org/2777863003
Cr-Commit-Position: refs/heads/master@{#460404}

[modify] https://crrev.com/e7727c85ef1e113d274a9328d93c4ef196e2fa7c/third_party/WebKit/LayoutTests/fast/events/inputevents/inputevent-cancelable.html
[modify] https://crrev.com/e7727c85ef1e113d274a9328d93c4ef196e2fa7c/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
[modify] https://crrev.com/e7727c85ef1e113d274a9328d93c4ef196e2fa7c/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
[modify] https://crrev.com/e7727c85ef1e113d274a9328d93c4ef196e2fa7c/third_party/WebKit/Source/core/editing/commands/EditorCommand.cpp
[modify] https://crrev.com/e7727c85ef1e113d274a9328d93c4ef196e2fa7c/third_party/WebKit/Source/core/events/InputEvent.cpp
[modify] https://crrev.com/e7727c85ef1e113d274a9328d93c4ef196e2fa7c/third_party/WebKit/Source/core/events/InputEvent.h