commit 6846eee179c8e25fcd4a16f56ce857ab952026cc
author Steve Kobes <skobes@chromium.org> Sat Feb 10 03:08:15 2018
committer Commit Bot <commit-bot@chromium.org> Sat Feb 10 03:08:15 2018
tree bd7ce42fac5d68d11b7debc130c5bb03b37641ca
parent 19a5598a44e61beaff166d04bc2efa45c977d0de

RLS: Fix scroll offsets on RTL pages with horizontal overflow.

Clamping the root PLSA should be done after the FrameView is resized,
because the size of the FrameView determines the scroll bounds of the
layout viewport (through LayoutView::OverflowClipRect).

This fixes two symptoms:

- incorrect initial scroll offset on Android, where the FrameView's
  width at construction time is the 980px layout fallback width

- failure to preserve scroll offset during window resize on desktop,
  since the clamping was based on the previous size

Bug: 807987
Change-Id: I6a6d2a25879fe8e89d3e1d6b958b3e6754c0108e
Reviewed-on: https://chromium-review.googlesource.com/911946
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Steve Kobes <skobes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#535946}