Rework SVG sizing

Source/core/rendering/RenderBoxModelObject.cpp

Index: Source/core/rendering/RenderBoxModelObject.cpp
diff --git a/Source/core/rendering/RenderBoxModelObject.cpp b/Source/core/rendering/RenderBoxModelObject.cpp
index 53d7164c9254ad60cea76dd2d87510bba9da9e01..2f54e9542489a0b91185bc47b50138c76890c631 100644
--- a/Source/core/rendering/RenderBoxModelObject.cpp
+++ b/Source/core/rendering/RenderBoxModelObject.cpp
@@ -187,6 +187,11 @@ bool RenderBoxModelObject::hasAutoHeightOrContainingBlockWithAutoHeight() const
     if (cb->isTableCell())
         return false;
 
+    // Match RenderBox::availableLogicalHeightUsing by special casing
+    // the render view. The available height is taken from the frame.
+    if (cb->isRenderView())
+        return false;
+
     if (!cb->style()->logicalHeight().isAuto() || (!cb->style()->logicalTop().isAuto() && !cb->style()->logicalBottom().isAuto()))
         return false;
 
@@ -805,18 +810,10 @@ IntSize RenderBoxModelObject::calculateImageIntrinsicDimensions(StyleImage* imag
     FloatSize intrinsicRatio;
     image->computeIntrinsicDimensions(this, intrinsicWidth, intrinsicHeight, intrinsicRatio);
 
-    // Intrinsic dimensions expressed as percentages must be resolved relative to the dimensions of the rectangle
-    // that establishes the coordinate system for the 'background-position' property.
-
-    // FIXME: Remove unnecessary rounding when layout is off ints: webkit.org/b/63656
-    if (intrinsicWidth.isPercent() && intrinsicHeight.isPercent() && intrinsicRatio.isEmpty()) {
-        // Resolve width/height percentages against positioningAreaSize, only if no intrinsic ratio is provided.
-        int resolvedWidth = static_cast<int>(round(positioningAreaSize.width() * intrinsicWidth.percent() / 100));
-        int resolvedHeight = static_cast<int>(round(positioningAreaSize.height() * intrinsicHeight.percent() / 100));
-        return IntSize(resolvedWidth, resolvedHeight);
-    }
+    ASSERT(!intrinsicWidth.isPercent());
+    ASSERT(!intrinsicHeight.isPercent());
 
-    IntSize resolvedSize(intrinsicWidth.isFixed() ? intrinsicWidth.value() : 0, intrinsicHeight.isFixed() ? intrinsicHeight.value() : 0);
+    IntSize resolvedSize(intrinsicWidth.value(), intrinsicHeight.value());
     IntSize minimumSize(resolvedSize.width() > 0 ? 1 : 0, resolvedSize.height() > 0 ? 1 : 0);
     if (shouldScaleOrNot == ScaleByEffectiveZoom)
         resolvedSize.scale(style()->effectiveZoom());