Use srcset's resource pixel density to determine intrinsic size

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index dac37c3724a9a041d17b305881b77c8bf9e1fefa..94e2c284a38b5e77168c7ced8f5d34fd5dd31027 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -269,6 +269,8 @@ public:
     virtual bool createsAnonymousWrapper() const { return false; }
     //////////////////////////////////////////
 
+    virtual float intrinsicSizeFactor() const { return 1.0f; }

[pdr., 2013/10/11 05:17:33]

I think we can get away without adding this. Instead, just add a check & cast
for RenderImage.

For example, getImageSize might look like:
if (m_renderer && m_renderer->isRenderImage())
  size.scale(toRenderImage(m_renderer)->intrinsicSizeFactor());

[Yoav Weiss, 2013/10/11 07:22:32]

OK

+
 protected:
     //////////////////////////////////////////
     // Helper functions. Dangerous to use!