commit ce922e757f5badefe2337029520926bd2d3e5e77
author Javier Fernandez <jfernandez@igalia.com> Wed Mar 28 14:03:57 2018
committer Commit Bot <commit-bot@chromium.org> Wed Mar 28 14:03:57 2018
tree 6c8d4f42c0733fcb20a3d5b9853a0c6c93d08a30
parent d87bfe70381a444b37edfce46bd7aca0077756ec

Backspacing shouldn't merge content into tables except for macOS

When uses hits backspace at the start of a paragraph, the content in
that block is merged in the previous block in the paragraph above. All
the browsers have the same behavior except in the case of such previous
block being a table.

Firefox and Edge both avoid merging the content into the table. I've
filed a issue in the Editing TF [1] to get some consensus, but it seems
that current behavior was implemented to match TextEdit and other native
text editing apps in macOS.

Considering that both MS Word and Google Docs avoid merging content on
backspacing, I think it's a good option for the end user that Chrome
implements that behavior as well, improving also the browsers
interoperability (we'll match Firefox and Edge).

I'll keep the current logic for macOS using an EditingBehavior flag, so
we can switch to a different behavior based on platform.

[1] https://github.com/w3c/editing/issues/164

Bug: 731000
Change-Id: Ibc5cad576b7115877a36929f717ff5ed194d0977
Reviewed-on: https://chromium-review.googlesource.com/981137
Commit-Queue: Javier Fernandez <jfernandez@igalia.com>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#546475}