Generate getters/setters for various flag fields in ComputedStyle.

This patch changes the following storage_only fields to be primitive
fields:
- SelfOrAncestorHasDirAutoAttribute
- HasCurrentOpacityAnimation
- HasCurrentTransformAnimation
- HasCurrentFilterAnimation
- HasCurrentBackdropFilterAnimation
- IsStackingContext
- RequiresAcceleratedCompositingForExternalReasons
- HasInlineTransform
- HasCompositorProxy
- HasAuthorBackground
- HasAuthorBorder

so that their getter/setters can be generated.

Diff: https://gist.github.com/643df772b40578c4a5b74da8a5feaa20/revisions

Bug: 628043
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I3320d353989400bcc30dea114fd8ad0b83dfbea8
Reviewed-on: https://chromium-review.googlesource.com/538521
Reviewed-by: nainar <nainar@chromium.org>
Reviewed-by: meade_UTC10 <meade@chromium.org>
Commit-Queue: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481132}
4 files changed