Make SkStream *not* ref counted.

src/core/SkTypeface.cpp

 /*
  * Copyright 2011 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 "SkAdvancedTypefaceMetrics.h"
 #include "SkEndian.h"
 #include "SkFontDescriptor.h"
@@ skipping 138 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkTypeface::serialize(SkWStream* wstream) const {
     bool isLocal = false;
     SkFontDescriptor desc(this->style());
     this->onGetFontDescriptor(&desc, &isLocal);
 
     // Embed font data if it's a local font.
-    if (isLocal && NULL == desc.getFontData()) {
+    if (isLocal && !desc.hasFontData()) {
         int ttcIndex;
         desc.setFontData(this->onOpenStream(&ttcIndex));
         desc.setFontIndex(ttcIndex);
     }
     desc.serialize(wstream);
 }
 
 void SkTypeface::serializeForcingEmbedding(SkWStream* wstream) const {
     bool ignoredIsLocal;
     SkFontDescriptor desc(this->style());
     this->onGetFontDescriptor(&desc, &ignoredIsLocal);
 
     // Always embed font data.
-    if (NULL == desc.getFontData()) {
+    if (!desc.hasFontData()) {
         int ttcIndex;
         desc.setFontData(this->onOpenStream(&ttcIndex));
         desc.setFontIndex(ttcIndex);
     }
     desc.serialize(wstream);
 }
 
 SkTypeface* SkTypeface::Deserialize(SkStream* stream) {
     SkFontDescriptor desc(stream);
-    SkStream* data = desc.getFontData();
+    SkStream* data = desc.transferFontData();
     if (data) {
         SkTypeface* typeface = SkTypeface::CreateFromStream(data, desc.getFontIndex());
         if (typeface) {
             return typeface;
         }
     }
     return SkTypeface::CreateFromName(desc.getFamilyName(), desc.getStyle());
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 149 matching lines @@
     if (ctx.get()) {
         SkPaint::FontMetrics fm;
         ctx->getFontMetrics(&fm);
         bounds->set(fm.fXMin * invTextSize, fm.fTop * invTextSize,
                     fm.fXMax * invTextSize, fm.fBottom * invTextSize);
         return true;
     }
     return false;
 }