Add Image::updateConcreteSize()

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

 /*
  * 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 80 matching lines @@
     bool isNull() const { return size().isEmpty(); }
 
     virtual bool usesContainerSize() const { return false; }
     virtual bool hasRelativeSize() const { return false; }
 
     // Computes (extracts) the intrinsic dimensions and ratio from the Image. The intrinsic ratio
     // will be the 'viewport' of the image. (Same as the dimensions for a raster image. For SVG
     // images it can be the dimensions defined by the 'viewBox'.)
     virtual void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio);
 
+    // "The concrete object size is the result of combining an
+    // object’s intrinsic dimensions and specified size with the

[fs, 2016/02/23 11:44:23]

Is that U+2019? Might want to avoid that and go with the regular dull U+0027
(for the sake of silly toolchains.) At least ISTR that it has been complained
about previously...

[davve, 2016/02/23 13:15:31]

Yes, I c&p from spec text... Good old U+0027 coming up.

+    // default object size of the context it’s used in, producing a
+    // rectangle with a definite width and height."
+    //
+    // https://drafts.csswg.org/css-images-3/#concrete-object-size
+    //
+    // Updates the image size to a new default object size.
+    virtual void updateConcreteObjectSize(const LayoutSize& defaultObjectSize) {}
+
     virtual IntSize size() const = 0;
     IntRect rect() const { return IntRect(IntPoint(), size()); }
     int width() const { return size().width(); }
     int height() const { return size().height(); }
     virtual bool getHotSpot(IntPoint&) const { return false; }
 
     bool setData(PassRefPtr<SharedBuffer> data, bool allDataReceived);
     virtual bool dataChanged(bool /*allDataReceived*/) { return false; }
 
     virtual String filenameExtension() const { return String(); } // null string if unknown
@@ skipping 58 matching lines @@
     // being responsible of clearing itself out.
     RawPtrWillBeUntracedMember<ImageObserver> m_imageObserver;
 };
 
 #define DEFINE_IMAGE_TYPE_CASTS(typeName) \
     DEFINE_TYPE_CASTS(typeName, Image, image, image->is##typeName(), image.is##typeName())
 
 } // namespace blink
 
 #endif