[Masonry] Add support for column|row-reverse item placement #55731
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
This CL adds the ability to place items in the opposite of the default
direction in column (right-to-left) and row (bottom-to-top), triggered
by
column-reverseorrow-reverse.The style which triggers this reversed placement may change based on how
w3c/csswg-drafts#12803 resolves.
There will be a follow-up change to support reverse placement in
dense-packing.
Bug: 343257585
Change-Id: I01a1f80d34da9672310e5ca40fa761ac43bc39c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7043283
Reviewed-by: Kurt Catti-Schmidt <kschmi@microsoft.com>
Commit-Queue: Celeste Pan <celestepan@microsoft.com>
Reviewed-by: Alison Maher <almaher@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#1538132}