Make SkStream *not* ref counted.

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
 #define SkPicture_DEFINED
@@ skipping 62 matching lines @@
      *  must make a copy of the src buffer.
      *  @param src Encoded data.
      *  @param length Size of the encoded data, in bytes.
      *  @param dst SkBitmap to install the pixel ref on.
      *  @param bool Whether or not a pixel ref was successfully installed.
      */
     typedef bool (*InstallPixelRefProc)(const void* src, size_t length, SkBitmap* dst);
 
     /**
      *  Recreate a picture that was serialized into a stream.
-     *  @param SkStream Serialized picture data.
+     *  @param SkStream Serialized picture data. Ownership is unchanged by this call.
      *  @param proc Function pointer for installing pixelrefs on SkBitmaps representing the
      *              encoded bitmap data from the stream.
      *  @return A new SkPicture representing the serialized data, or NULL if the stream is
      *          invalid.
      */
     static SkPicture* CreateFromStream(SkStream*,
                                        InstallPixelRefProc proc = &SkImageDecoder::DecodeMemory);
 
     /**
      *  Recreate a picture that was serialized into a buffer. If the creation requires bitmap
@@ skipping 213 matching lines @@
 
     friend class SkPictureRecorder;            // SkRecord-based constructor.
     friend class GrLayerHoister;               // access to fRecord
     friend class ReplaceDraw;
     friend class SkPictureUtils;
     friend class SkRecordedDrawable;
 };
 SK_COMPILE_ASSERT(sizeof(SkPicture) <= 96, SkPictureSize);
 
 #endif