Revert "remove SkClipVisitor"

This reverts commit 91b961d33d1d3e78c212be8738c1c7c468c358ca.

Reason for revert: need to update caller in android

Original change's description:
> remove SkClipVisitor
> 
> With new device clipping, this is unsupported on SkCanvas
> 
> BUG=skia:
> 
> Change-Id: I39443f213be1005b8b9208d604e4bfb31cbda424
> Reviewed-on: https://skia-review.googlesource.com/9349
> Commit-Queue: Mike Reed <reed@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> 

TBR=bsalomon@google.com,robertphillips@google.com,reed@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Change-Id: I22df0c66ec564ca32355179d2ee5ea14bff7b1d5
Reviewed-on: https://skia-review.googlesource.com/9456
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index 840a647e50..3ce4baeb59 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -21,6 +21,7 @@ class GrContext;
 class GrRenderTargetContext;
 class SkBaseDevice;
 class SkBitmap;
+class SkCanvasClipVisitor;
 class SkClipStack;
 class SkData;
 class SkDraw;
@@ -1325,6 +1326,14 @@ public:
     */
     const SkMatrix& getTotalMatrix() const;
 
+    typedef SkCanvasClipVisitor ClipVisitor;
+    /**
+     *  Replays the clip operations, back to front, that have been applied to
+     *  the canvas, calling the appropriate method on the visitor for each
+     *  clip. All clips have already been transformed into device space.
+     */
+    void replayClips(ClipVisitor*) const;
+
     ///////////////////////////////////////////////////////////////////////////
 
     // don't call
@@ -1732,4 +1741,12 @@ private:
 };
 #define SkAutoCanvasRestore(...) SK_REQUIRE_LOCAL_VAR(SkAutoCanvasRestore)
 
+class SkCanvasClipVisitor {
+public:
+    virtual ~SkCanvasClipVisitor();
+    virtual void clipRect(const SkRect&, SkClipOp, bool antialias) = 0;
+    virtual void clipRRect(const SkRRect&, SkClipOp, bool antialias) = 0;
+    virtual void clipPath(const SkPath&, SkClipOp, bool antialias) = 0;
+};
+
 #endif