Make SkStream *not* ref counted.

tests/PDFPrimitivesTest.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 "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
@@ skipping 101 matching lines @@
 
 static void SimpleCheckObjectOutput(skiatest::Reporter* reporter,
                                     SkPDFObject* obj,
                                     const char* expectedResult) {
     CheckObjectOutput(reporter, obj, expectedResult,
                       strlen(expectedResult), true, false);
 }
 
 static void TestPDFStream(skiatest::Reporter* reporter) {
     char streamBytes[] = "Test\nFoo\tBar";
-    SkAutoTUnref<SkMemoryStream> streamData(new SkMemoryStream(
+    SkAutoTDelete<SkMemoryStream> streamData(new SkMemoryStream(
         streamBytes, strlen(streamBytes), true));
     SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData.get()));
     SimpleCheckObjectOutput(
         reporter, stream.get(),
         "<</Length 12\n>> stream\nTest\nFoo\tBar\nendstream");
     stream->insert("Attribute", new SkPDFInt(42))->unref();
     SimpleCheckObjectOutput(reporter, stream.get(),
                             "<</Length 12\n/Attribute 42\n>> stream\n"
                                 "Test\nFoo\tBar\nendstream");
 
@@ skipping 349 matching lines @@
 
     // Filter just created; should be unvisited.
     REPORTER_ASSERT(reporter, !filter->visited());
     SkPaint paint;
     paint.setImageFilter(filter.get());
     canvas.drawRect(SkRect::MakeWH(100, 100), paint);
 
     // Filter was used in rendering; should be visited.
     REPORTER_ASSERT(reporter, filter->visited());
 }