[iOS][MF] Fix content instets on rotation

Bug: 845472
Change-Id: I3afc1e03c280c88cce039ac8d4a6b288edd7be78
Reviewed-on: https://chromium-review.googlesource.com/c/1355173
Reviewed-by: Yi Su <mrsuyi@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#612608}(cherry picked from commit 39cf762f8d2d380ab767ec6c1f0842569587eceb)
Reviewed-on: https://chromium-review.googlesource.com/c/1363176
Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#72}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
1 file changed