remove 'deprecated' region from SkDraw

include/core/SkDraw.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkDraw_DEFINED
@@ skipping 127 matching lines @@
      */
     bool SK_WARN_UNUSED_RESULT
     computeConservativeLocalClipBounds(SkRect* bounds) const;
 
     /** Returns the current setting for using fake gamma and contrast. */
     uint32_t SK_WARN_UNUSED_RESULT scalerContextFlags() const;
 
 public:
     SkPixmap        fDst;
     const SkMatrix* fMatrix;        // required
-    const SkRegion* fClip;          // DEPRECATED
     const SkRasterClip* fRC;        // required
 
-    const SkClipStack* fClipStack;  // optional
-    SkBaseDevice*   fDevice;        // optional
+    const SkClipStack* fClipStack;  // optional, may be null
+    SkBaseDevice*   fDevice;        // optional, may be null
 
 #ifdef SK_DEBUG
     void validate() const;
 #else
     void validate() const {}
 #endif
 };
 
 #endif