Fix a few clang errors while trying to build tools target.

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
 
@@ skipping 135 matching lines @@
     const SkRegion& getRgn() const {
         SkASSERT(fClipRgn);
         return *fClipRgn;
     }
     SkBlitter* getBlitter() {
         SkASSERT(fBlitter);
         return fBlitter;
     }
 
 private:
-    const SkAAClip* fAAClip;
     SkRegion        fBWRgn;
     SkAAClipBlitter fAABlitter;
     // what we return
     const SkRegion* fClipRgn;
     SkBlitter* fBlitter;
 };
 
 #endif