Make the FloatSize constructor from an IntSize explicit.

third_party/WebKit/Source/core/style/StyleGeneratedImage.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 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 58 matching lines @@
 
     return LayoutSize(m_containerSize);
 }
 
 void StyleGeneratedImage::computeIntrinsicDimensions(const LayoutObject* layoutObject, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio)
 {
     // At a zoom level of 1 the image is guaranteed to have an integer size.
     IntSize size = flooredIntSize(imageSize(layoutObject, 1));
     intrinsicWidth = Length(size.width(), Fixed);
     intrinsicHeight = Length(size.height(), Fixed);
-    intrinsicRatio = size;
+    intrinsicRatio = FloatSize(size);
 }
 
 void StyleGeneratedImage::addClient(LayoutObject* layoutObject)
 {
     m_imageGeneratorValue->addClient(layoutObject, IntSize());
 }
 
 void StyleGeneratedImage::removeClient(LayoutObject* layoutObject)
 {
     m_imageGeneratorValue->removeClient(layoutObject);
 }
 
 PassRefPtr<Image> StyleGeneratedImage::image(const LayoutObject* layoutObject, const IntSize& size) const
 {
     return m_imageGeneratorValue->image(layoutObject, size);
 }
 
 bool StyleGeneratedImage::knownToBeOpaque(const LayoutObject* layoutObject) const
 {
     return m_imageGeneratorValue->knownToBeOpaque(layoutObject);
 }
 
 DEFINE_TRACE(StyleGeneratedImage)
 {
     visitor->trace(m_imageGeneratorValue);
     StyleImage::trace(visitor);
 }
 
 }