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 687b5f4faf90176e6690b5d841c4a986f8325b74..4bdf38435e2709ee3bb011ad8860f1e98319f63d 100644
--- a/Source/core/rendering/RenderBoxModelObject.cpp
+++ b/Source/core/rendering/RenderBoxModelObject.cpp
@@ -805,18 +805,10 @@ 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.
+    ASSERT(!intrinsicWidth.isPercent());
+    ASSERT(!intrinsicHeight.isPercent());
 
-    // 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);
-    }
-
-    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());