diff --git a/Source/core/rendering/RenderFlowThread.cpp b/Source/core/rendering/RenderFlowThread.cpp
index bff81ff..97c2ef6 100644
--- a/Source/core/rendering/RenderFlowThread.cpp
+++ b/Source/core/rendering/RenderFlowThread.cpp
@@ -261,7 +261,7 @@
     return regionClippingRect;
 }
 
-void RenderFlowThread::paintFlowThreadPortionInRegion(PaintInfo& paintInfo, RenderRegion* region, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const LayoutPoint& paintOffset) const
+void RenderFlowThread::paintFlowThreadPortionInRegion(PaintInfo& paintInfo, RenderRegion* region, const LayoutRect& flowThreadPortionRect, const LayoutRect& flowThreadPortionOverflowRect, const LayoutPoint& paintOffset) const
 {
     GraphicsContext* context = paintInfo.context;
     if (!context)
@@ -314,7 +314,7 @@
     return RenderBlock::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction);
 }
 
-bool RenderFlowThread::hitTestFlowThreadPortionInRegion(RenderRegion* region, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) const
+bool RenderFlowThread::hitTestFlowThreadPortionInRegion(RenderRegion* region, const LayoutRect& flowThreadPortionRect, const LayoutRect& flowThreadPortionOverflowRect, const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) const
 {
     LayoutRect regionClippingRect = computeRegionClippingRect(accumulatedOffset, flowThreadPortionRect, flowThreadPortionOverflowRect);
     if (!regionClippingRect.contains(locationInContainer.point()))
@@ -972,7 +972,7 @@
         overrideLogicalContentHeightComputed = true;
 
         // Compute the region height pretending that the offsetBreakInCurrentRegion is the logicalHeight for the auto-height region.
-        LayoutUnit regionOverrideLogicalContentHeight = region->computeReplacedLogicalHeightRespectingMinMaxHeight(offsetBreakInCurrentRegion);
+        LayoutUnit regionOverrideLogicalContentHeight = region->constrainContentBoxLogicalHeightByMinMax(offsetBreakInCurrentRegion, -1);
 
         // The new height of this region needs to be smaller than the initial value, the max height. A forced break is the only way to change the initial
         // height of an auto-height region besides content ending.