tree 5c3a790720a9766ebdcb5651039414f6df3064ea
parent 537d6a95a92f065d02b2606801c986e6e168f745
author Ting-Yu Lin <tlin@mozilla.com> 1547674600 +0000
committer moz-wptsync-bot <wptsync@mozilla.com> 1547721902 -0500

Part 2 - Fix appending a subtree with column-span descendants under the ::moz-column-content.

The elements under <body> are treat as content append, so their frames
will be construct by nsCSSFrameConstructor::ContentAppended.

This patch fixed only the simple "append" case which is appending to the
last continuation of ::moz-column-content. For other more complex
appending or inserting cases, we might need to reframe (bug 1504053).

Differential Revision: https://phabricator.services.mozilla.com/D16076

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1503420
gecko-commit: 3eafb595be4fce04627edba4b9686ac44baed45f
gecko-integration-branch: central
gecko-reviewers: emilio