Remove a pointless use of SkWeakRefCnt.

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 417 matching lines @@
 SkTypeface* SkFontMgr_DirectWrite::createTypefaceFromDWriteFont(
         IDWriteFontFace* fontFace,
         IDWriteFont* font,
         IDWriteFontFamily* fontFamily) const {
     SkAutoMutexAcquire ama(fTFCacheMutex);
     ProtoDWriteTypeface spec = { fontFace, font, fontFamily };
     SkTypeface* face = fTFCache.findByProcAndRef(FindByDWriteFont, &spec);
     if (NULL == face) {
         face = DWriteFontTypeface::Create(fFactory.get(), fontFace, font, fontFamily);
         if (face) {
-            fTFCache.add(face, get_style(font), true);
+            fTFCache.add(face, get_style(font));
         }
     }
     return face;
 }
 
 int SkFontMgr_DirectWrite::onCountFamilies() const {
     return fFontCollection->GetFontFamilyCount();
 }
 
 void SkFontMgr_DirectWrite::onGetFamilyName(int index, SkString* familyName) const {
@@ skipping 306 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));
 }