Implement display:flow-root

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

Index: third_party/WebKit/Source/core/layout/LayoutBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.cpp b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
index 882eadfab0ba37ccc82799febfbb9f140d5083b5..34fc12d66be7a5e8ed52a32458335a14094aa045 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
@@ -4709,9 +4709,11 @@ bool LayoutBox::shouldBeConsideredAsReplaced() const {
 
 DISABLE_CFI_PERF
 bool LayoutBox::avoidsFloats() const {
+  // crbug.com/460704: This should be merged with createsNewFormattingContext().
   return shouldBeConsideredAsReplaced() || hasOverflowClip() || isHR() ||
          isLegend() || isWritingModeRoot() || isFlexItemIncludingDeprecated() ||
-         style()->containsPaint() || style()->containsLayout();
+         style()->containsPaint() || style()->containsLayout() ||
+         style()->display() == EDisplay::FlowRoot;
 }
 
 bool LayoutBox::hasNonCompositedScrollbars() const {