Make SkStream *not* ref counted.

src/core/SkPictureData.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPictureData_DEFINED
 #define SkPictureData_DEFINED
 
@@ skipping 40 matching lines @@
 #define SK_PICT_PAINT_BUFFER_TAG    SkSetFourByteTag('p', 'n', 't', ' ')
 #define SK_PICT_PATH_BUFFER_TAG     SkSetFourByteTag('p', 't', 'h', ' ')
 #define SK_PICT_TEXTBLOB_BUFFER_TAG SkSetFourByteTag('b', 'l', 'o', 'b')
 
 // Always write this guy last (with no length field afterwards)
 #define SK_PICT_EOF_TAG     SkSetFourByteTag('e', 'o', 'f', ' ')
 
 class SkPictureData {
 public:
     SkPictureData(const SkPictureRecord& record, const SkPictInfo&, bool deepCopyOps);
+    // Does not affect ownership of SkStream.
     static SkPictureData* CreateFromStream(SkStream*,
                                            const SkPictInfo&,
                                            SkPicture::InstallPixelRefProc);
     static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&);
 
     virtual ~SkPictureData();
 
     void serialize(SkWStream*, SkPixelSerializer*) const;
     void flatten(SkWriteBuffer&) const;
 
     bool containsBitmaps() const;
 
     bool hasText() const { return fContentInfo.hasText(); }
 
     int opCount() const { return fContentInfo.numOperations(); }
 
     const SkData* opData() const { return fOpData; }
 
 protected:
     explicit SkPictureData(const SkPictInfo& info);
 
+    // Does not affect ownership of SkStream.
     bool parseStream(SkStream*, SkPicture::InstallPixelRefProc);
     bool parseBuffer(SkReadBuffer& buffer);
 
 public:
     const SkBitmap& getBitmap(SkReader32* reader) const {
         const int index = reader->readInt();
         return fBitmaps[index];
     }
 
     const SkPath& getPath(SkReader32* reader) const {
@@ skipping 36 matching lines @@
     bool suitableForGpuRasterization(GrContext* context, const char **reason,
                                      GrPixelConfig config, SkScalar dpi) const;
 
     bool suitableForLayerOptimization() const;
 #endif
 
 private:
     void init();
 
     // these help us with reading/writing
+    // Does not affect ownership of SkStream.
     bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size, SkPicture::InstallPixelRefProc);
     bool parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size);
     void flattenToBuffer(SkWriteBuffer&) const;
 
     // Only used by getBitmap() if the passed in index is SkBitmapHeap::INVALID_SLOT. This empty
     // bitmap allows playback to draw nothing and move on.
     SkBitmap fBadBitmap;
 
     SkTArray<SkBitmap> fBitmaps;
     SkTArray<SkPaint>  fPaints;
@@ skipping 13 matching lines @@
 
     const SkPictInfo fInfo;
 
     static void WriteFactories(SkWStream* stream, const SkFactorySet& rec);
     static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec);
 
     void initForPlayback() const;
 };
 
 #endif