remove 'deprecated' region from SkDraw

src/core/SkRasterClip.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRasterClip_DEFINED
 #define SkRasterClip_DEFINED
 
 #include "SkRegion.h"
 #include "SkAAClip.h"
 
 class SkRRect;
 
+/**
+ *  Wraps a SkRegion and SkAAClip, so we have a single object that can represent either our
+ *  BW or antialiased clips.
+ *
+ *  This class is optimized for the raster backend of canvas, but can be expense to keep up2date,
+ *  so it supports a runtime option (force-conservative-rects) to turn it into a super-fast
+ *  rect-only tracker. The gpu backend uses this since it does not need the result (it uses
+ *  SkClipStack instead).
+ */
 class SkRasterClip {
 public:
     SkRasterClip(bool forceConservativeRects = false);
     SkRasterClip(const SkIRect&, bool forceConservativeRects = false);
+    SkRasterClip(const SkRegion&);
     SkRasterClip(const SkRasterClip&);
     ~SkRasterClip();
 
+    // Only compares the current state. Does not compare isForceConservativeRects(), so that field
+    // could be different but this could still return true.
+    bool operator==(const SkRasterClip&) const;
+    bool operator!=(const SkRasterClip& other) const {
+        return !(*this == other);
+    }
+
     bool isForceConservativeRects() const { return fForceConservativeRects; }
 
     bool isBW() const { return fIsBW; }
     bool isAA() const { return !fIsBW; }
     const SkRegion& bwRgn() const { SkASSERT(fIsBW); return fBW; }
     const SkAAClip& aaRgn() const { SkASSERT(!fIsBW); return fAA; }
 
     bool isEmpty() const {
         SkASSERT(this->computeIsEmpty() == fIsEmpty);
         return fIsEmpty;
@@ skipping 136 matching lines @@
 
 private:
     SkRegion        fBWRgn;
     SkAAClipBlitter fAABlitter;
     // what we return
     const SkRegion* fClipRgn;
     SkBlitter* fBlitter;
 };
 
 #endif