Support display:flex for 'summary'

third_party/WebKit/Source/core/html/HTMLSummaryElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLSummaryElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLSummaryElement.cpp b/third_party/WebKit/Source/core/html/HTMLSummaryElement.cpp
index 96289cd611da91634271cf2aaec004bc3f9c3ebf..8a268f3c99721b9fd9736cac8b383fb70d5bc6bd 100644
--- a/third_party/WebKit/Source/core/html/HTMLSummaryElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLSummaryElement.cpp
@@ -30,6 +30,7 @@
 #include "core/html/shadow/DetailsMarkerControl.h"
 #include "core/html/shadow/ShadowElementNames.h"
 #include "core/layout/LayoutBlockFlow.h"
+#include "core/layout/LayoutFlexibleBox.h"
 
 namespace blink {
 
@@ -47,8 +48,10 @@ HTMLSummaryElement::HTMLSummaryElement(Document& document)
 {
 }
 
-LayoutObject* HTMLSummaryElement::createLayoutObject(const ComputedStyle&)
+LayoutObject* HTMLSummaryElement::createLayoutObject(const ComputedStyle& style)
 {
+    if (style.display() == FLEX)

[cbiesinger, 2016/09/28 11:16:09]

Could you also add GRID and the inline variants here? (INLINE_FLEX, INLINE_GRID)

+        return LayoutObject::createObject(this, style);
     return new LayoutBlockFlow(this);
 }