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

Source/core/dom/StyleEngine.cpp

Index: Source/core/dom/StyleEngine.cpp
diff --git a/Source/core/dom/StyleEngine.cpp b/Source/core/dom/StyleEngine.cpp
index e67a833e5d891013f151dcbf4fe8d2002b21c36d..31c413a87e9ec93cd412aa8b2e8b70dddcc28bd5 100644
--- a/Source/core/dom/StyleEngine.cpp
+++ b/Source/core/dom/StyleEngine.cpp
@@ -365,6 +365,12 @@ void StyleEngine::enableExitTransitionStylesheets()
     collection->enableExitTransitionStylesheets();
 }
 
+void StyleEngine::disableExitTransitionStylesheets()
+{
+    TreeScopeStyleSheetCollection* collection = ensureStyleSheetCollectionFor(*m_document);
+    collection->disableExitTransitionStylesheets();
+}
+
 bool StyleEngine::shouldUpdateDocumentStyleSheetCollection(StyleResolverUpdateMode updateMode) const
 {
     return m_documentScopeDirty || updateMode == FullStyleUpdate;