[css-display] Support display: contents pseudo-elements.

third_party/WebKit/Source/core/layout/LayoutImage.h

Index: third_party/WebKit/Source/core/layout/LayoutImage.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutImage.h b/third_party/WebKit/Source/core/layout/LayoutImage.h
index bc63b2f667c5acd2efb25c764d50cb1349c25528..ec3ae9abc6b84f0c2f3ae70b3e60ee028dee9e7b 100644
--- a/third_party/WebKit/Source/core/layout/LayoutImage.h
+++ b/third_party/WebKit/Source/core/layout/LayoutImage.h
@@ -35,6 +35,7 @@ namespace blink {
 
 class HTMLAreaElement;
 class HTMLMapElement;
+class PseudoElement;
 
 // LayoutImage is used to display any image type.
 //
@@ -54,7 +55,7 @@ class CORE_EXPORT LayoutImage : public LayoutReplaced {
   LayoutImage(Element*);
   ~LayoutImage() override;
 
-  static LayoutImage* createAnonymous(Document*);
+  static LayoutImage* createAnonymous(PseudoElement&);
 
   void setImageResource(LayoutImageResource*);