Initial error handling code

include/effects/SkLayerRasterizer.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 SkLayerRasterizer_DEFINED
 #define SkLayerRasterizer_DEFINED
 
 #include "SkRasterizer.h"
 #include "SkDeque.h"
 #include "SkScalar.h"
 
 class SkPaint;
 
 class SK_API SkLayerRasterizer : public SkRasterizer {
+    typedef SkRasterizer INHERITED;
+
 public:
             SkLayerRasterizer();
     virtual ~SkLayerRasterizer();
 
     void addLayer(const SkPaint& paint) {
         this->addLayer(paint, 0, 0);
     }
 
     /**    Add a new layer (above any previous layers) to the rasterizer.
         The layer will extract those fields that affect the mask from
         the specified paint, but will not retain a reference to the paint
         object itself, so it may be reused without danger of side-effects.
     */
     void addLayer(const SkPaint& paint, SkScalar dx, SkScalar dy);
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLayerRasterizer)
 
 protected:
     SkLayerRasterizer(SkFlattenableReadBuffer&);
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
 
     // override from SkRasterizer
     virtual bool onRasterize(const SkPath& path, const SkMatrix& matrix,
                              const SkIRect* clipBounds,
                              SkMask* mask, SkMask::CreateMode mode) const;
 
 private:
     SkDeque fLayers;
-
-    typedef SkRasterizer INHERITED;
 };
 
 #endif