remove SkBounder -- unused and unloved

experimental/PdfViewer/SkNulCanvas.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkNulCanvas_DEFINED
 #define SkNulCanvas_DEFINED
 
@@ skipping 39 matching lines @@
     virtual void drawPicture(SkPicture& picture) SK_OVERRIDE {}
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
                               const SkColor colors[], SkXfermode* xmode,
                               const uint16_t indices[], int indexCount,
                               const SkPaint& paint) SK_OVERRIDE {}
     virtual void drawData(const void* data, size_t length) SK_OVERRIDE {}
     virtual void beginCommentGroup(const char* description) SK_OVERRIDE {}
     virtual void addComment(const char* kywd, const char* value) SK_OVERRIDE {}
     virtual void endCommentGroup() SK_OVERRIDE {}
-    virtual SkBounder* setBounder(SkBounder* bounder) SK_OVERRIDE {return NULL;}
     virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE {return NULL;}
 
     virtual bool isClipEmpty() const SK_OVERRIDE { return false; }
 #ifdef SK_SUPPORT_LEGACY_GETCLIPTYPE
     virtual ClipType getClipType() const SK_OVERRIDE { return kRect_ClipType; }
 #endif
     virtual bool getClipBounds(SkRect* bounds) const SK_OVERRIDE {
         if (NULL != bounds) {
             bounds->setXYWH(0, 0,
                             SkIntToScalar(this->imageInfo().fWidth),
@@ skipping 32 matching lines @@
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE {}
     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE {}
     virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE {}
     virtual void onClipRegion(const SkRegion&, SkRegion::Op)  SK_OVERRIDE {}
 
 private:
     typedef SkCanvas INHERITED;
 };
 
 #endif  // SkNulCanvas_DEFINED