Update DirectWrite streams to SkStreamAsset.

src/ports/SkFontMgr_win_dw.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDWrite.h"
 #include "SkDWriteFontFileStream.h"
 #include "SkFontMgr.h"
@@ skipping 17 matching lines @@
     virtual ULONG STDMETHODCALLTYPE AddRef();
     virtual ULONG STDMETHODCALLTYPE Release();
 
     // IDWriteFontFileLoader methods
     virtual HRESULT STDMETHODCALLTYPE CreateStreamFromKey(
         void const* fontFileReferenceKey,
         UINT32 fontFileReferenceKeySize,
         IDWriteFontFileStream** fontFileStream);
 
     // Takes ownership of stream.
-    static HRESULT Create(SkStream* stream, StreamFontFileLoader** streamFontFileLoader) {
+    static HRESULT Create(SkStreamAsset* stream, StreamFontFileLoader** streamFontFileLoader) {
         *streamFontFileLoader = new StreamFontFileLoader(stream);
         if (NULL == streamFontFileLoader) {
             return E_OUTOFMEMORY;
         }
         return S_OK;
     }
 
-    SkAutoTDelete<SkStream> fStream;
+    SkAutoTDelete<SkStreamAsset> fStream;
 
 private:
-    StreamFontFileLoader(SkStream* stream) : fRefCount(1), fStream(stream) { }
+    StreamFontFileLoader(SkStreamAsset* stream) : fRefCount(1), fStream(stream) { }
     virtual ~StreamFontFileLoader() { }
 
     ULONG fRefCount;
 };
 
 HRESULT StreamFontFileLoader::QueryInterface(REFIID iid, void** ppvObject) {
     if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileLoader)) {
         *ppvObject = this;
         AddRef();
         return S_OK;
@@ skipping 705 matching lines @@
 }
 
 #include "SkFontMgr_indirect.h"
 SK_API SkFontMgr* SkFontMgr_New_DirectWriteRenderer(SkRemotableFontMgr* proxy) {
     SkAutoTUnref<SkFontMgr> impl(SkFontMgr_New_DirectWrite());
     if (impl.get() == NULL) {
         return NULL;
     }
     return SkNEW_ARGS(SkFontMgr_Indirect, (impl.get(), proxy));
 }