Revert of Propagate inherited properties into slotted elements on recalc. (patchset #1 id:1 of https://codereview.chromium.org/1708213002/ )

Reason for revert:
Broke non-oilpan build.
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20non-Oilpan%20Builder/builds/289/steps/compile/logs/stdio

Original issue's description:
> Propagate inherited properties into slotted elements on recalc.
>
> When we reach a <slot> element during recalc, we need to trigger recalc
> of elements distributed to that slot for inheritance. This is similar
> to what is done for InsertionPoint. I have however not found a case
> where we need a bigger cannon than LocalStyleChange on the distributed
> elements.
>
> Made a few override methods final, expecting no inheritance of
> HTMLSlotElement.
>
> R=kochi@chromium.org,hayato@chromium.org
> BUG=587797
>
> Committed: https://crrev.com/e6491c6e66c3393363402f04f625959e29ba236c
> Cr-Commit-Position: refs/heads/master@{#376406}

TBR=hayato@chromium.org,kochi@chromium.org,rune@opera.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=587797

Review URL: https://codereview.chromium.org/1718433002

Cr-Commit-Position: refs/heads/master@{#376408}
4 files changed