Teach HTMLImageElement that it doesn't need ::attach.

sky/engine/core/html/HTMLImageElement.cpp

Index: sky/engine/core/html/HTMLImageElement.cpp
diff --git a/sky/engine/core/html/HTMLImageElement.cpp b/sky/engine/core/html/HTMLImageElement.cpp
index 113fee9a404e58f95727dfabd358d6059ed5fc81..0cb3654b06671c06c0c2c07efea33176ccbc7768 100644
--- a/sky/engine/core/html/HTMLImageElement.cpp
+++ b/sky/engine/core/html/HTMLImageElement.cpp
@@ -149,6 +149,11 @@ RenderObject* HTMLImageElement::createRenderer(RenderStyle* style)
     RenderImage* image = new RenderImage(this);
     image->setImageResource(RenderImageResource::create());
     image->setImageDevicePixelRatio(m_imageDevicePixelRatio);
+
+    RenderImageResource* imageResource = image->imageResource();
+    if (cachedImage() || imageResource->cachedImage())
+        imageResource->setImageResource(cachedImage());
+
     return image;
 }
 
@@ -160,21 +165,6 @@ bool HTMLImageElement::canStartSelection() const
     return false;
 }
 
-void HTMLImageElement::attach(const AttachContext& context)
-{
-    HTMLElement::attach(context);
-
-    if (renderer() && renderer()->isImage()) {
-        RenderImage* renderImage = toRenderImage(renderer());
-        RenderImageResource* renderImageResource = renderImage->imageResource();
-        if (renderImageResource->hasImage())
-            return;
-
-        if (imageLoader().image() || renderImageResource->cachedImage())
-            renderImageResource->setImageResource(imageLoader().image());
-    }
-}
-
 Node::InsertionNotificationRequest HTMLImageElement::insertedInto(ContainerNode* insertionPoint)
 {
     if (m_listener)