[CSS Shapes] Properly shrink boxes to avoid shape-outside

Source/core/rendering/RenderBox.cpp

Index: Source/core/rendering/RenderBox.cpp
diff --git a/Source/core/rendering/RenderBox.cpp b/Source/core/rendering/RenderBox.cpp
index b4c3939d511b886855b77a039883d27d13d96512..9aaddd7f22fb7ecad4ff8baedaaca3eb57fe255d 100644
--- a/Source/core/rendering/RenderBox.cpp
+++ b/Source/core/rendering/RenderBox.cpp
@@ -1458,14 +1458,15 @@ LayoutUnit RenderBox::shrinkLogicalWidthToAvoidFloats(LayoutUnit childMarginStar
     LayoutUnit logicalTopPosition = logicalTop();
     LayoutUnit startOffsetForContent = cb->startOffsetForContent();
     LayoutUnit endOffsetForContent = cb->endOffsetForContent();
-    LayoutUnit startOffsetForLine = cb->startOffsetForLine(logicalTopPosition, false);
-    LayoutUnit endOffsetForLine = cb->endOffsetForLine(logicalTopPosition, false);
+    LayoutUnit logicalHeight = cb->logicalHeightForChild(*this);
+    LayoutUnit startOffsetForLine = cb->startOffsetForLine(logicalTopPosition, false, logicalHeight);
+    LayoutUnit endOffsetForLine = cb->endOffsetForLine(logicalTopPosition, false, logicalHeight);
 
     // If there aren't any floats constraining us then allow the margins to shrink/expand the width as much as they want.
     if (startOffsetForContent == startOffsetForLine && endOffsetForContent == endOffsetForLine)
-        return cb->availableLogicalWidthForLine(logicalTopPosition, false) - childMarginStart - childMarginEnd;
+        return cb->availableLogicalWidthForLine(logicalTopPosition, false, logicalHeight) - childMarginStart - childMarginEnd;
 
-    LayoutUnit width = cb->availableLogicalWidthForLine(logicalTopPosition, false) - std::max(LayoutUnit(), childMarginStart) - std::max(LayoutUnit(), childMarginEnd);
+    LayoutUnit width = cb->availableLogicalWidthForLine(logicalTopPosition, false, logicalHeight) - std::max(LayoutUnit(), childMarginStart) - std::max(LayoutUnit(), childMarginEnd);
     // We need to see if margins on either the start side or the end side can contain the floats in question. If they can,
     // then just using the line width is inaccurate. In the case where a float completely fits, we don't need to use the line
     // offset at all, but can instead push all the way to the content edge of the containing block. In the case where the float