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

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

Index: third_party/WebKit/Source/core/layout/LayoutQuote.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutQuote.h b/third_party/WebKit/Source/core/layout/LayoutQuote.h
index 3b460372d2511f59858c4d495865caa4dcaa1350..a013482c503fb2fce506381725cef3dc72eef702 100644
--- a/third_party/WebKit/Source/core/layout/LayoutQuote.h
+++ b/third_party/WebKit/Source/core/layout/LayoutQuote.h
@@ -27,8 +27,8 @@
 
 namespace blink {
 
-class Document;
 class LayoutTextFragment;
+class PseudoElement;
 
 // LayoutQuote is the layout object associated with generated quotes
 // ("content: open-quote | close-quote | no-open-quote | no-close-quote").
@@ -40,7 +40,7 @@ class LayoutTextFragment;
 // and |m_previous| below.
 class LayoutQuote final : public LayoutInline {
  public:
-  LayoutQuote(Document*, const QuoteType);
+  LayoutQuote(PseudoElement&, const QuoteType);
   ~LayoutQuote() override;
   void attachQuote();
 
@@ -88,6 +88,14 @@ class LayoutQuote final : public LayoutInline {
   // up-to-date linked list positions).
   bool m_attached;
 
+  // The pseudo-element that owns us.
+  //
+  // TODO(ecobos@igalia.com): This is also in m_node, should we make that
+  // protected instead of private? Seems easy to misuse.
+  //
+  // Livedness is the same as m_node, so this is safe.

[rune, 2017/03/13 10:36:00]

"Lifetime is the same as for LayoutObject::m_node"

+  UntracedMember<PseudoElement> m_owningPseudo;
+
   // Cached text for this quote.
   String m_text;
 };