Navigation transitions (web to native app): Revert exit transition (Blink side)

Source/core/dom/TreeScopeStyleSheetCollection.cpp

Index: Source/core/dom/TreeScopeStyleSheetCollection.cpp
diff --git a/Source/core/dom/TreeScopeStyleSheetCollection.cpp b/Source/core/dom/TreeScopeStyleSheetCollection.cpp
index f806b20bcee7af520e4e5559ad55de0111881092..ece0274cbdb324aed752537bef344d3c13f1afc3 100644
--- a/Source/core/dom/TreeScopeStyleSheetCollection.cpp
+++ b/Source/core/dom/TreeScopeStyleSheetCollection.cpp
@@ -192,6 +192,17 @@ void TreeScopeStyleSheetCollection::enableExitTransitionStylesheets()
     }
 }
 
+void TreeScopeStyleSheetCollection::disableExitTransitionStylesheets()
+{
+    DocumentOrderedList::iterator begin = m_styleSheetCandidateNodes.begin();
+    DocumentOrderedList::iterator end = m_styleSheetCandidateNodes.end();
+    for (DocumentOrderedList::iterator it = begin; it != end; ++it) {
+        Node* node = *it;
+        if (isHTMLLinkElement(*node))
+            toHTMLLinkElement(node)->disableIfExitTransitionStyle();
+    }
+}
+
 static bool styleSheetsUseRemUnits(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >& sheets)
 {
     for (unsigned i = 0; i < sheets.size(); ++i) {