NOT FOR LANDING Experiment with allocating SVGImageForContainer on demand

Source/core/layout/LayoutImage.cpp

Index: Source/core/layout/LayoutImage.cpp
diff --git a/Source/core/layout/LayoutImage.cpp b/Source/core/layout/LayoutImage.cpp
index 53fa66bdae50ef55887434f8153c654b47680a81..14eccc0b048595d5e834f1586a9d068ba0d47bcf 100644
--- a/Source/core/layout/LayoutImage.cpp
+++ b/Source/core/layout/LayoutImage.cpp
@@ -138,15 +138,6 @@ void LayoutImage::updateIntrinsicSizeIfNeeded(const LayoutSize& newSize)
     setIntrinsicSize(newSize);
 }
 
-void LayoutImage::updateInnerContentRect()
-{
-    // Propagate container size to the image resource.
-    LayoutRect containerRect = replacedContentRect();
-    IntSize containerSize(containerRect.width(), containerRect.height());
-    if (!containerSize.isEmpty())
-        m_imageResource->setContainerSizeForLayoutObject(containerSize);
-}
-
 void LayoutImage::invalidatePaintAndMarkForLayoutIfNeeded()
 {
     LayoutSize oldIntrinsicSize = intrinsicSize();
@@ -177,15 +168,6 @@ void LayoutImage::invalidatePaintAndMarkForLayoutIfNeeded()
         return;
     }
 
-    // The image hasn't changed in size or its style constrains its size, so a paint invalidation will suffice.
-    if (everHadLayout() && !selfNeedsLayout()) {
-        // The inner content rectangle is calculated during layout, but may need an update now
-        // (unless the box has already been scheduled for layout). In order to calculate it, we
-        // may need values from the containing block, though, so make sure that we're not too
-        // early. It may be that layout hasn't even taken place once yet.
-        updateInnerContentRect();
-    }
-
     if (imageResource() && imageResource()->image() && imageResource()->image()->maybeAnimated())
         setShouldDoFullPaintInvalidation(PaintInvalidationDelayedFull);
     else
@@ -301,12 +283,6 @@ bool LayoutImage::nodeAtPoint(HitTestResult& result, const HitTestLocation& loca
     return inside;
 }
 
-void LayoutImage::layout()
-{
-    LayoutReplaced::layout();
-    updateInnerContentRect();
-}
-
 bool LayoutImage::updateImageLoadingPriorities()
 {
     if (!m_imageResource || !m_imageResource->cachedImage() || m_imageResource->cachedImage()->isLoaded())