Make SkStream *not* ref counted.

src/images/SkJpegUtility.cpp

 /*
  * Copyright 2010 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.
  */
 
 
 #include "SkJpegUtility.h"
 
@@ skipping 78 matching lines @@
         src->bytes_in_buffer -= num_bytes;
     }
 }
 
 static void sk_term_source(j_decompress_ptr /*cinfo*/) {}
 
 
 ///////////////////////////////////////////////////////////////////////////////
 
 skjpeg_source_mgr::skjpeg_source_mgr(SkStream* stream, SkImageDecoder* decoder)
-    : fStream(SkRef(stream))
+    : fStream(stream)
     , fDecoder(decoder) {
 
     init_source = sk_init_source;
     fill_input_buffer = sk_fill_input_buffer;
     skip_input_data = sk_skip_input_data;
     resync_to_restart = jpeg_resync_to_restart;
     term_source = sk_term_source;
 #ifdef SK_BUILD_FOR_ANDROID
     seek_input_data = sk_seek_input_data;
 #endif
 //    SkDebugf("**************** use memorybase %p %d\n", fMemoryBase, fMemoryBaseSize);
 }
 
-skjpeg_source_mgr::~skjpeg_source_mgr() {
-    SkSafeUnref(fStream);
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 static void sk_init_destination(j_compress_ptr cinfo) {
     skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
 
     dest->next_output_byte = dest->fBuffer;
     dest->free_in_buffer = skjpeg_destination_mgr::kBufferSize;
 }
 
 static boolean sk_empty_output_buffer(j_compress_ptr cinfo) {
@@ skipping 34 matching lines @@
 void skjpeg_error_exit(j_common_ptr cinfo) {
     skjpeg_error_mgr* error = (skjpeg_error_mgr*)cinfo->err;
 
     (*error->output_message) (cinfo);
 
     /* Let the memory manager delete any temp files before we die */
     jpeg_destroy(cinfo);
 
     longjmp(error->fJmpBuf, -1);
 }