GitLab

Update core/paint/README.md and platform/graphics/paint/README.md

Remove out-dated docs about PaintInvalidationState and DisplayItemClient
cache generation.

Add new paint invalidation and raster invalidation.

Update docs about paint properties.

Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I46df3f3e98353fc9a66fc950430df0d8e416d394
Reviewed-on: https://chromium-review.googlesource.com/c/1281921Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599856}