switch surface to sk_sp

src/core/SkRecorder.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRecorder_DEFINED
 #define SkRecorder_DEFINED
 
@@ skipping 104 matching lines @@
                      int count, SkXfermode::Mode, const SkRect* cull, const SkPaint*) override;
 
     void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
     void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
     void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
     void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) override;
 
     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
     void onDrawAnnotation(const SkRect&, const char[], SkData*) override;
 
-    SkSurface* onNewSurface(const SkImageInfo&, const SkSurfaceProps&) override { return nullptr; }
+    sk_sp<SkSurface> onNewSurface(const SkImageInfo&, const SkSurfaceProps&) override;
 
     void flushMiniRecorder();
 
 private:
     template <typename T>
     T* copy(const T*);
 
     template <typename T>
     T* copy(const T[], size_t count);
 
     SkIRect devBounds() const {
         SkIRect devBounds;
         this->getClipDeviceBounds(&devBounds);
         return devBounds;
     }
 
     DrawPictureMode fDrawPictureMode;
     size_t fApproxBytesUsedBySubPictures;
     SkRecord* fRecord;
     SkAutoTDelete<SkDrawableList> fDrawableList;
 
     SkMiniRecorder* fMiniRecorder;
 };
 
 #endif//SkRecorder_DEFINED