Refactor PNGImageDecoder's call to setSize

third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 26 matching lines @@
 
  public:
   PNGImageDecoder(AlphaOption,
                   const ColorBehavior&,
                   size_t maxDecodedBytes,
                   size_t offset = 0);
   ~PNGImageDecoder() override;
 
   // ImageDecoder:
   String filenameExtension() const override { return "png"; }
+  bool setSize(unsigned, unsigned) override;
   int repetitionCount() const override;
   bool frameIsCompleteAtIndex(size_t) const override;
   float frameDurationAtIndex(size_t) const override;
   bool setFailed() override;
 
   // Callbacks from libpng
   void headerAvailable();
   void rowAvailable(unsigned char* row, unsigned rowIndex, int);
   void frameComplete();
 
+  void setColorSpace();
   void setRepetitionCount(int);
 
  private:
   using ParseQuery = PNGImageReader::ParseQuery;
 
   // ImageDecoder:
   void decodeSize() override { parse(ParseQuery::Size); }
   void decode(size_t) override;
   void parse(ParseQuery);
   size_t decodeFrameCount() override;
   void initializeNewFrame(size_t) override;
   void clearFrameBuffer(size_t) override;
   bool canReusePreviousFrameBuffer(size_t) const override;
 
   std::unique_ptr<PNGImageReader> m_reader;
   const unsigned m_offset;
   size_t m_currentFrame;
   int m_repetitionCount;
   bool m_hasAlphaChannel;
   bool m_currentBufferSawAlpha;
 };
 
 }  // namespace blink
 
 #endif