Add Image::updateConcreteSize()

third_party/WebKit/Source/core/fetch/ImageResource.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 62 matching lines @@
 
     // Assumes that image rotation or scale doesn't effect the image size being empty or not.
     bool canRender() { return !errorOccurred() && !imageSize(DoNotRespectImageOrientation, 1).isEmpty(); }
 
     bool usesImageContainerSize() const;
     bool imageHasRelativeSize() const;
     // The device pixel ratio we got from the server for this image, or 1.0.
     float devicePixelRatioHeaderValue() const { return m_devicePixelRatioHeaderValue; }
     bool hasDevicePixelRatioHeaderValue() const { return m_hasDevicePixelRatioHeaderValue; }
 
+    void updateConcreteObjectSize(const LayoutSize& defaultObjectSize);

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

Thought: Could we avoid adding additional logistic through ImageResource (which
is oftentimes just an additional null-check) and instead do that in
LayoutImageResource (and other "hosts")? (I.e don't rely on the "fetch" layer
for anything but fetching the resource.) Just a thought thoug, no action need be
taken in/by this CL.

[davve, 2016/02/23 13:15:30]

Sounds interesting and likely a good idea. Not sure how to keep track of the
idea. Create an issue or add a TODO?

[fs, 2016/02/23 14:52:00]

Since it's a definite maybe, creating an issue might be more appropriate.

     enum SizeType {
         IntrinsicSize, // Report the intrinsic size.
         IntrinsicCorrectedToDPR, // Report the intrinsic size corrected to account for image density.
     };
     // This method takes a zoom multiplier that can be used to increase the natural size of the image by the zoom.
     LayoutSize imageSize(RespectImageOrientationEnum shouldRespectImageOrientation, float multiplier, SizeType = IntrinsicSize);
     void computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio);
 
     bool isAccessAllowed(SecurityOrigin*);
 
@@ skipping 64 matching lines @@
 
     RefPtr<blink::Image> m_image;
     bool m_hasDevicePixelRatioHeaderValue;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Image);
 
 } // namespace blink
 
 #endif