GitLab

Refactors layout-specific state (document size, rotation) from
PDFiumEngine into a separate DocumentLayout class. This will allow new
layouts to be computed without disturbing the current layout.

As a side benefit, this should be another step towards simplifying
PDFiumEngine to be less of a grab bag of concerns.

Bug: 885110
Change-Id: Ieabde78d8acdcb2f83aac980d03f6fd8f28295a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1716158
Commit-Queue: K Moon <kmoon@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#681422}