Various small changes to simplify the copy of PaintManager in pdf/:
1. Unify PaintAggregator::ReadyRect and PaintManager::ReadyRect.
2. Drop |ReadyRect::offset| field, which is always (0, 0).
3. Drop |is_always_opaque| option, which is always true.
4. Move PaintAggregator and PaintManager into chrome_pdf::.
R=dhoss@chromium.org
Bug: 1099020
Change-Id: Ic68d9c32ff24baac5d5a63185da688b11556b93c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2300989
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Auto-Submit: K. Moon <kmoon@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789149}
ad77a18ea3