Make SkStream *not* ref counted.

src/fonts/SkFontMgr_fontconfig.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.
  */
 
 #include "SkFontMgr.h"
 #include "SkFontStyle.h"
 #include "SkFontConfigInterface.h"
@@ skipping 278 matching lines @@
                                                     const char* bcp47[], int bcp47Count,
                                                     SkUnichar character) const SK_OVERRIDE {
         return NULL;
     }
     virtual SkTypeface* onMatchFaceStyle(const SkTypeface*,
                                          const SkFontStyle&) const SK_OVERRIDE { return NULL; }
 
     SkTypeface* onCreateFromData(SkData*, int ttcIndex) const SK_OVERRIDE { return NULL; }
 
     SkTypeface* onCreateFromStream(SkStream* stream, int ttcIndex) const SK_OVERRIDE {
+        SkAutoTDelete<SkStream> streamDeleter(stream);
         const size_t length = stream->getLength();
         if (!length) {
             return NULL;
         }
         if (length >= 1024 * 1024 * 1024) {
             return NULL;  // don't accept too large fonts (>= 1GB) for safety.
         }
 
         // TODO should the caller give us the style or should we get it from freetype?
         SkFontStyle style;
         bool isFixedWidth = false;
         if (!fScanner.scanFont(stream, 0, NULL, &style, &isFixedWidth)) {
             return NULL;
         }
 
-        SkTypeface* face = FontConfigTypeface::Create(style, isFixedWidth, stream);
+        SkTypeface* face = FontConfigTypeface::Create(style, isFixedWidth, streamDeleter.detach());
         return face;
     }
 
     SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const SK_OVERRIDE {
-        SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path));
-        return stream.get() ? this->createFromStream(stream, ttcIndex) : NULL;
+        SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(path));
+        return stream.get() ? this->createFromStream(stream.detach(), ttcIndex) : NULL;
     }
 
     virtual SkTypeface* onLegacyCreateTypeface(const char familyName[],
                                                unsigned styleBits) const SK_OVERRIDE {
         FCLocker lock;
         return FontConfigTypeface::LegacyCreateTypeface(NULL, familyName,
                                                   (SkTypeface::Style)styleBits);
     }
 };
 
 SkFontMgr* SkFontMgr::Factory() {
     SkFontConfigInterface* fci = RefFCI();
     return fci ? SkNEW_ARGS(SkFontMgr_fontconfig, (fci)) : NULL;
 }