GitLab

In r837379 we landed support for this feature in LayoutNG. This CL
implements the feature for Legacy layout.

Bug: 1155633
Change-Id: I2b974daad7a98d26fdc4d4468572840e30be5cad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2598843
Commit-Queue: Javier Fernandez <jfernandez@igalia.com>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842846}