logicalHeightWithVisibleOverflow() needs to include overhanging floats.

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

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
index c633ed2fc07dfc64fb31b29b623f75520fd98366..e01e173ded8e60e752d4e38d2ccabe63d410b76c 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -3905,6 +3905,11 @@ LayoutUnit LayoutBlockFlow::nextFloatLogicalBottomBelowForBlock(
       logicalHeight);
 }
 
+LayoutUnit LayoutBlockFlow::logicalHeightWithVisibleOverflow() const {
+  LayoutUnit logicalHeight = LayoutBlock::logicalHeightWithVisibleOverflow();
+  return std::max(logicalHeight, lowestFloatLogicalBottom());
+}
+
 Node* LayoutBlockFlow::nodeForHitTest() const {
   // If we are in the margins of block elements that are part of a
   // continuation we're actually still inside the enclosing element