Replace ASSERT, ASSERT_NOT_REACHED, and RELEASE_ASSERT in platform/graphics

third_party/WebKit/Source/platform/graphics/Image.cpp

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 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
@@ skipping 38 matching lines @@
 #include <tuple>
 
 namespace blink {
 
 Image::Image(ImageObserver* observer)
     : m_imageObserver(observer), m_imageObserverDisabled(false) {}
 
 Image::~Image() {}
 
 Image* Image::nullImage() {
-  ASSERT(isMainThread());
+  DCHECK(isMainThread());
   DEFINE_STATIC_REF(Image, nullImage, (BitmapImage::create()));
   return nullImage;
 }
 
 PassRefPtr<Image> Image::loadPlatformResource(const char* name) {
   const WebData& resource = Platform::current()->loadResource(name);
   if (resource.isEmpty())
     return Image::nullImage();
 
   RefPtr<Image> image = BitmapImage::create();
@@ skipping 308 matching lines @@
   FloatRect subset = dest;
   subset.setX((dest.x() - tile.x()) / scale.width());
   subset.setY((dest.y() - tile.y()) / scale.height());
   subset.setWidth(dest.width() / scale.width());
   subset.setHeight(dest.height() / scale.height());
 
   return subset;
 }
 
 }  // namespace blink