Implement SkPicture::bytesUsed() for SkRecord backend

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
 
@@ skipping 60 matching lines @@
         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);
+
+    /** May return zero if the SkPicture implementation doesn't support counting. */
+    static size_t approximateBytesUsed(const SkPicture* pict);

[reed1, 2014/11/17 21:32:26]

nit: Skia Static Methods Are Capitalized.

"Used"? Can the name or dox give a better idea of what is being measured?

[tomhudson, 2014/11/17 22:12:15]

Done.
    /**
     *  How many bytes are allocated to hold the SkPicture.
     *  Includes operations, parameters, bounding data, deletion listeners;
     *  does not include large objects that SkRecord holds a reference to
     *  (e.g. paths, pixels backing bitmaps).
     */

Happy to rename if we've got a better candidate.

 };
 
 #endif