Split SkDevice into SkBaseDevice and SkBitmapDevice

experimental/PdfViewer/SkNulCanvas.h

 #ifndef EXPERIMENTAL_PDFVIEWER_SKNULCANVAS_H_
 #define EXPERIMENTAL_PDFVIEWER_SKNULCANVAS_H_
 
 #include "SkCanvas.h"
 
 class SK_API SkNulCanvas : public SkCanvas {
 public:
     SK_DECLARE_INST_COUNT(SkNulCanvas);
 
     SkNulCanvas() {}
-    explicit SkNulCanvas(SkDevice* device) : SkCanvas(device) {}
+    explicit SkNulCanvas(SkBaseDevice* device) : SkCanvas(device) {}
 
     explicit SkNulCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap) {}
     virtual ~SkNulCanvas() {}
 
     virtual int save(SaveFlags flags = kMatrixClip_SaveFlag) {return 0;}
     virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
                           SaveFlags flags = kARGB_ClipLayer_SaveFlag) {return 0;}
     int saveLayerAlpha(const SkRect* bounds, U8CPU alpha,
                        SaveFlags flags = kARGB_ClipLayer_SaveFlag) {return 0;}
     virtual void restore() {}
@@ skipping 54 matching lines @@
                               const SkPaint& paint) {}
     virtual void drawData(const void* data, size_t length) {}
     virtual void beginCommentGroup(const char* description) {}
     virtual void addComment(const char* kywd, const char* value) {}
     virtual void endCommentGroup() {}
     virtual SkBounder* setBounder(SkBounder* bounder) {return NULL;}
     virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) {return NULL;}
 
 protected:
     virtual SkCanvas* canvasForDrawIter() {return NULL;}
-    virtual SkDevice* setDevice(SkDevice* device) {return NULL;}
+    virtual SkBaseDevice* setDevice(SkBaseDevice* device) {return NULL;}
 
 private:
     typedef SkCanvas INHERITED;
 };
 
 #endif  // EXPERIMENTAL_PDFVIEWER_SKNULCANVAS_H_