Allow to set display "inline" on legend element

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

Index: third_party/WebKit/Source/core/layout/LayoutFieldset.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutFieldset.cpp b/third_party/WebKit/Source/core/layout/LayoutFieldset.cpp
index 37750db20c649197de1de4147ee4cba6b0f52656..dd4b46f1b56a985c7a8e63a7da4b7495902cde77 100644
--- a/third_party/WebKit/Source/core/layout/LayoutFieldset.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutFieldset.cpp
@@ -135,8 +135,10 @@ LayoutBox* LayoutFieldset::findInFlowLegend() const
         if (legend->isFloatingOrOutOfFlowPositioned())
             continue;
 
-        if (isHTMLLegendElement(legend->node()))
-            return toLayoutBox(legend);
+        if (isHTMLLegendElement(legend->node())) {
+            if (legend->isBox())
+                return toLayoutBox(legend);
+        }
     }
     return nullptr;
 }