Replace ASSERT with DCHECK in platform/

third_party/WebKit/Source/platform/image-encoders/PNGImageEncoder.h

 /*
  * Copyright (c) 2010, Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 35 matching lines @@
 class PLATFORM_EXPORT PNGImageEncoderState final {
   USING_FAST_MALLOC(PNGImageEncoderState);
   WTF_MAKE_NONCOPYABLE(PNGImageEncoderState);
 
  public:
   static std::unique_ptr<PNGImageEncoderState> Create(
       const IntSize& image_size,
       Vector<unsigned char>* output);
   ~PNGImageEncoderState();
   png_struct* Png() {
-    ASSERT(png_);
+    DCHECK(png_);
     return png_;
   }
   png_info* Info() {
-    ASSERT(info_);
+    DCHECK(info_);
     return info_;
   }
 
  private:
   PNGImageEncoderState(png_struct* png, png_info* info)
       : png_(png), info_(info) {}
   png_struct* png_;
   png_info* info_;
 };
 
 class PLATFORM_EXPORT PNGImageEncoder {
   STATIC_ONLY(PNGImageEncoder);
 
  public:
   // Encode the input data with default compression quality. See also
   // https://crbug.com/179289
   static bool Encode(const ImageDataBuffer&, Vector<unsigned char>* output);
 
   // Functions for progressive image encoding
   static void WriteOneRowToPng(unsigned char* pixels, PNGImageEncoderState*);
   static void FinalizePng(PNGImageEncoderState*);
 };
 
 }  // namespace blink
 
 #endif