Revert of Compile under-invalidation checking in all builds (patchset #4 id:60001 of https://codereview.chromium.org/2299223002/ )

Reason for revert:
On Mac and Windows strange pixel under invalidations are reported, e.g.: https://storage.googleapis.com/chromium-layout-test-archives/WebKit_Win10/14277/layout-test-results/results.html

Original issue's description:
> Compile under-invalidation checking in all builds
>
> This will let the tests having under-invalidation issues produce the
> same result on all builds, so enable us to rebaseline the tests with
> failure results. In this way we can track either regressions and
> progressions instead of ignoring the tests.
>
> BUG=619103
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
>
> Committed: https://crrev.com/1e01747a312617a0088b94f2e7cc55092d50975e
> Cr-Commit-Position: refs/heads/master@{#416060}

TBR=pdr@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619103

Review-Url: https://codereview.chromium.org/2306783002
Cr-Commit-Position: refs/heads/master@{#416109}
28 files changed