remove (unused) GatherPixelRefs

include/utils/SkPictureUtils.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPictureUtils_DEFINED
 #define SkPictureUtils_DEFINED
 
 #include "SkPicture.h"
-#include "SkTDArray.h"
-
-class SkData;
-struct SkRect;
 
 class SK_API SkPictureUtils {
 public:
     /**
-     *  Given a rectangular visible "window" into the picture, return an array
-     *  of SkPixelRefs that might intersect that area. To keep the call fast,
-     *  the returned list is not guaranteed to be exact, so it may miss some,
-     *  and it may return false positives.
-     *
-     *  The pixelrefs returned in the SkData are already owned by the picture,
-     *  so the returned pointers are only valid while the picture is in scope
-     *  and remains unchanged.
-     */
-    static SkData* GatherPixelRefs(const SkPicture* pict, const SkRect& area);
-
-    /**
-     * SkPixelRefContainer provides a base class for more elaborate pixel ref
-     * query structures (e.g., rtrees, quad-trees, etc.)
-     */
-    class SkPixelRefContainer : public SkRefCnt {
-    public:
-        virtual void add(SkPixelRef* pr, const SkRect& rect) = 0;
-
-        // The returned array may contain duplicates
-        virtual void query(const SkRect& queryRect, SkTDArray<SkPixelRef*> *result) = 0;
-
-    private:
-        typedef SkRefCnt INHERITED;
-    };
-
-    // Simple query structure that just stores a linked list of pixel refs
-    // and rects.
-    class SkPixelRefsAndRectsList : public SkPixelRefContainer {
-    public:
-        void add(SkPixelRef* pr, const SkRect& rect) SK_OVERRIDE {
-            PixelRefAndRect *dst = fArray.append();
-
-            dst->fPixelRef = pr;
-            dst->fRect = rect;
-        }
-
-        void query(const SkRect& queryRect, SkTDArray<SkPixelRef*> *result) SK_OVERRIDE {
-            for (int i = 0; i < fArray.count(); ++i) {
-                if (SkRect::Intersects(fArray[i].fRect, queryRect)) {
-                    *result->append() = fArray[i].fPixelRef;
-                }
-            }
-        }
-
-    private:
-        struct PixelRefAndRect {
-            SkPixelRef* fPixelRef;
-            SkRect      fRect;
-        };
-
-        SkTDArray<PixelRefAndRect> fArray;
-
-        typedef SkPixelRefContainer INHERITED;
-    };
-
-    /**
-     *  Fill the provided pixel ref container with the picture's pixel ref
-     *  and rect information.
-     */
-    static void GatherPixelRefsAndRects(SkPicture* pict, SkPixelRefContainer* prCont);
-
-    /**
      *  How many bytes are allocated to hold the SkPicture.
      *  Includes operations, parameters, bounding data, deletion listeners;
      *  includes nested SkPictures, but does not include large objects that
      *  SkRecord holds a reference to (e.g. paths, or pixels backing bitmaps).
      */
     static size_t ApproximateBytesUsed(const SkPicture* pict);
 };
 
 #endif