Delete m_ExtHandle and RetainFont

core/fxge/android/fx_android_font.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "core/fxcrt/include/fx_system.h"
 
 #if _FX_OS_ == _FX_ANDROID_
 
@@ skipping 70 matching lines @@
   return FALSE;
 }
 
 void CFX_AndroidFontInfo::DeleteFont(void* hFont) {
   if (!hFont)
     return;
 
   static_cast<CFPF_SkiaFont*>(hFont)->Release();
 }
 
-void* CFX_AndroidFontInfo::RetainFont(void* hFont) {
-  return nullptr;
-}
-
 #endif  // _FX_OS_ == _FX_ANDROID_