Reland "Add SkClipStack::replaceClip() separate from deprecated clip op"

This reverts commit 8ba1e71a1f5965af2f681b2e9423712c3afb6e1c.

Reason for revert: had missed a few places where GrReducedClip needed to
use the equivalent region op, not skClipOp + replace bool.

TBR=robertphillips@google.com,brianosman@google.com,csmartdalton@google.com

Original change's description:
> Revert "Add SkClipStack::replaceClip() separate from deprecated clip op"
>
> This reverts commit 68587ae274e5a65e6facb47fca34d5e01b0af247.
>
> Reason for revert: breaking path clipping tests in Android?
>
> Original change's description:
> > Add SkClipStack::replaceClip() separate from deprecated clip op
> >
> > The replaceClip functionality was added to allow Android to move off of
> > generalized expanding clips. At the time, SkClipStack simply used the
> > kReplace_SkClipOp to handle it. In order to remove those expanding ops,
> > SkClipStack will need a proper implementation of replaceClip().
> >
> > The clip elements have an additional field to mark if
> > it's a replace (and it's op will be kIntersect). Adds a temporary
> > getRegionOp() function to unify elements that use this field vs.
> > elements that use the deprecated clip op (i.e. if they were deserialized
> > from an SKP that recorded an expanding op).
> >
> > Clients of SkClipOp that checked for replace ops use the new function
> > instead of referring to the enum value directly.
> >
> > Bug: skia:10209
> > Change-Id: I1c16c87fadb2becfe181db717c05e240ac87fd34
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/436158
> > Commit-Queue: Michael Ludwig <michaelludwig@google.com>
> > Reviewed-by: Robert Phillips <robertphillips@google.com>
> > Reviewed-by: Chris Dalton <csmartdalton@google.com>
>
> TBR=robertphillips@google.com,brianosman@google.com,csmartdalton@google.com,michaelludwig@google.com,skcq-be@skia-corp.google.com.iam.gserviceaccount.com
>
> Change-Id: If3f99a7d2f2df99c2b99d431d494ca28da66b1d8
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:10209
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/436956
> Reviewed-by: Michael Ludwig <michaelludwig@google.com>

# Not skipping CQ checks because this is a reland.

Bug: skia:10209
Change-Id: I9feb0f3571ec26580bcdf0fe541f43f2ee8cf8d2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/436959
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
9 files changed