Make SkStream *not* ref counted.

src/utils/SkPDFRasterizer.cpp

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifdef SK_BUILD_FOR_WIN32
 #pragma warning(push)
 #pragma warning(disable : 4530)
 #endif
 
 #include "SkPDFRasterizer.h"
 #include "SkColorPriv.h"
 
 #ifdef SK_BUILD_NATIVE_PDF_RENDERER
 #include "SkPdfRenderer.h"
 #endif  // SK_BUILD_NATIVE_PDF_RENDERER
 
 #ifdef SK_BUILD_POPPLER
 #include <poppler-document.h>
 #include <poppler-image.h>
 #include <poppler-page.h>
 #include <poppler-page-renderer.h>
 #endif  // SK_BUILD_POPPLER
 
 #ifdef SK_BUILD_POPPLER
 bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output) {
+  SkAutoTDelete<SkStream> streamDeleter(pdf);
   size_t size = pdf->getLength();
   SkAutoFree buffer(sk_malloc_throw(size));
   pdf->read(buffer.get(), size);
 
   SkAutoTDelete<poppler::document> doc(
       poppler::document::load_from_raw_data((const char*)buffer.get(), size));
   if (!doc.get() || doc->is_locked()) {
     return false;
   }
 
@@ skipping 34 matching lines @@
   }
 
   output->swap(bitmap);
 
   return true;
 }
 #endif  // SK_BUILD_POPPLER
 
 #ifdef SK_BUILD_NATIVE_PDF_RENDERER
 bool SkNativeRasterizePDF(SkStream* pdf, SkBitmap* output) {
+    SkAutoTDelete<SkStream> streamDeleter(pdf);
     return SkPDFNativeRenderToBitmap(pdf, output);
 }
 #endif  // SK_BUILD_NATIVE_PDF_RENDERER