Implement SkPicture::bytesUsed() for SkRecord backend

include/core/SkPicture.h

 
 /*
  * Copyright 2007 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPicture_DEFINED
@@ skipping 190 matching lines @@
      *  number may be greater or less than the number of SkCanvas calls
      *  recorded: some calls may be recorded as more than one operation, or some
      *  calls may be optimized away.
      */
     int approximateOpCount() const;
 
     /** Return true if this picture contains text.
      */
     bool hasText() const;
 
+    /** Returns zero for unsupported implementations. */
+    size_t bytesUsed() const;

[mtklein, 2014/08/21 17:18:06]

I'd perhaps hedge to approximateBytesUsed(), like ~OpCount() above.

+
 private:
     // V2 : adds SkPixelRef's generation ID.
     // V3 : PictInfo tag at beginning, and EOF tag at the end
     // V4 : move SkPictInfo to be the header
     // V5 : don't read/write FunctionPtr on cross-process (we can detect that)
     // V6 : added serialization of SkPath's bounds (and packed its flags tighter)
     // V7 : changed drawBitmapRect(IRect) to drawBitmapRectToRect(Rect)
     // V8 : Add an option for encoding bitmaps
     // V9 : Allow the reader and writer of an SKP disagree on whether to support
     //      SK_SUPPORT_HINTING_SCALE_FACTOR
@@ skipping 96 matching lines @@
         bool        fWillPlaybackBitmaps;
         bool        fHasText;
         int         fNumPaintWithPathEffectUses;
         int         fNumFastPathDashEffects;
         int         fNumAAConcavePaths;
         int         fNumAAHairlineConcavePaths;
     } fAnalysis;
 };
 
 #endif