Fix percentage handling for replaced elements

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
index a9bafeec3a831b64657df4197067748cb266d3b3..b79d4d6bbb6958acc35faf9942a375174d0ed3c5 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
@@ -558,12 +558,15 @@ LayoutBlock* LayoutBoxModelObject::containingBlockForAutoHeightDetection(Length
 bool LayoutBoxModelObject::hasAutoHeightOrContainingBlockWithAutoHeight() const
 {
     const LayoutBox* thisBox = isBox() ? toLayoutBox(this) : nullptr;
+    Length logicalHeightLength = style()->logicalHeight();
+    LayoutBlock* cb = containingBlockForAutoHeightDetection(logicalHeightLength);
+    if (logicalHeightLength.hasPercent() && cb && isBox())
+        cb->addPercentHeightDescendant(const_cast<LayoutBox*>(toLayoutBox(this)));
     if (thisBox && thisBox->isFlexItem()) {
         LayoutFlexibleBox& flexBox = toLayoutFlexibleBox(*parent());
         if (flexBox.childLogicalHeightForPercentageResolution(*thisBox) != LayoutUnit(-1))
             return false;
     }
-    Length logicalHeightLength = style()->logicalHeight();
     if (logicalHeightLength.isAuto())
         return true;
 
@@ -571,7 +574,7 @@ bool LayoutBoxModelObject::hasAutoHeightOrContainingBlockWithAutoHeight() const
         return false;
 
     // If the height of the containing block computes to 'auto', then it hasn't been 'specified explicitly'.
-    if (LayoutBlock* cb = containingBlockForAutoHeightDetection(logicalHeightLength))
+    if (cb)
         return cb->hasAutoHeightOrContainingBlockWithAutoHeight();
     return false;
 }