(
This is intended to facilitate efficient kMatrix_SaveFlags emulation
on restore():
* collect all clip stack elements for the current save count into a
side clip stack
* canvas.restore(everything)
* replay the collected clip ops to restore the initial clip state
=> we restored the matrix but the clip state is unchanged
)
Two main changes:
* expose the save count for SkClipStack::Element
* expose a replay method for the same (logic relocated from
SkCanvas::replayClips)
The SkCanvas::ClipVisitor shuffling is to enable forward decl
in SkClipStack.h (cannot fwdecl a nested class).
R=reed@google.com, robertphillips@google.comTBR=reed@google.com
Author: fmalita@chromium.org
Review URL: https://codereview.chromium.org/269693003
c3b589a24e