Delete unused fNamedFactorySet from SkWriteBuffer

src/core/SkPictureFlat.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkPictureFlat.h"
 
 #include "SkChecksum.h"
 #include "SkColorFilter.h"
@@ skipping 45 matching lines @@
     SkRefCnt_SafeAssign(fArray[index], obj);
     return obj;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkFlatController::SkFlatController(uint32_t writeBufferFlags)
 : fBitmapHeap(nullptr)
 , fTypefaceSet(nullptr)
 , fTypefacePlayback(nullptr)
-, fFactorySet(nullptr)
 , fWriteBufferFlags(writeBufferFlags) {}
 
 SkFlatController::~SkFlatController() {
     SkSafeUnref(fBitmapHeap);
     SkSafeUnref(fTypefaceSet);
-    SkSafeUnref(fFactorySet);
 }
 
 void SkFlatController::setBitmapHeap(SkBitmapHeap* heap) {
     SkRefCnt_SafeAssign(fBitmapHeap, heap);
 }
 
 void SkFlatController::setTypefaceSet(SkRefCntSet *set) {
     SkRefCnt_SafeAssign(fTypefaceSet, set);
 }
 
 void SkFlatController::setTypefacePlayback(SkTypefacePlayback* playback) {
     fTypefacePlayback = playback;
 }
-
-SkNamedFactorySet* SkFlatController::setNamedFactorySet(SkNamedFactorySet* set) {
-    SkRefCnt_SafeAssign(fFactorySet, set);
-    return set;
-}