Revert "Use srcset's resource pixel density to determine intrinsic size"

Source/core/rendering/RenderImageResource.cpp

Index: Source/core/rendering/RenderImageResource.cpp
diff --git a/Source/core/rendering/RenderImageResource.cpp b/Source/core/rendering/RenderImageResource.cpp
index ffd1dc3f53bf1797b846b43ea17b286e76d90308..61301870230f8eafc483f877c34cafa9eec661b2 100644
--- a/Source/core/rendering/RenderImageResource.cpp
+++ b/Source/core/rendering/RenderImageResource.cpp
@@ -30,7 +30,6 @@
 
 #include "core/fetch/ImageResource.h"
 #include "core/platform/graphics/Image.h"
-#include "core/rendering/RenderImage.h"
 #include "core/rendering/RenderObject.h"
 
 namespace WebCore {
@@ -104,14 +103,4 @@ Image* RenderImageResource::nullImage()
     return Image::nullImage();
 }
 
-LayoutSize RenderImageResource::getImageSize(float multiplier, ImageResource::SizeType type) const
-{
-    if (!m_cachedImage)
-        return LayoutSize();
-    LayoutSize size = m_cachedImage->imageSizeForRenderer(m_renderer, multiplier, type);
-    if (m_renderer && m_renderer->isRenderImage())
-        size.scale(toRenderImage(m_renderer)->imageDevicePixelRatio());
-    return size;
-}
-
 } // namespace WebCore