Remove most of scoped styles.

Source/core/css/resolver/SharedStyleFinder.cpp

Index: Source/core/css/resolver/SharedStyleFinder.cpp
diff --git a/Source/core/css/resolver/SharedStyleFinder.cpp b/Source/core/css/resolver/SharedStyleFinder.cpp
index 0bfdbf4c5914841bdfd785f91b6bfacd77f5162a..5830c6d40b3bcc4bfd906dffff746e8c21202547 100644
--- a/Source/core/css/resolver/SharedStyleFinder.cpp
+++ b/Source/core/css/resolver/SharedStyleFinder.cpp
@@ -220,8 +220,6 @@ bool SharedStyleFinder::canShareStyleWithElement(Element& candidate) const
         return false;
     if (candidate.hasID() && m_features.hasSelectorForId(candidate.idForStyleResolution()))
         return false;
-    if (candidate.hasScopedHTMLStyleChild())
-        return false;
     if (candidate.shadow() && candidate.shadow()->containsActiveStyles() && !sharingCandidateShadowHasSharedStyleSheetContents(candidate))
         return false;
     if (!sharingCandidateDistributedToSameInsertionPoint(candidate))
@@ -250,8 +248,6 @@ bool SharedStyleFinder::canShareStyleWithElement(Element& candidate) const
     if (element().parentOrShadowHostElement() != parent) {
         if (!parent->isStyledElement())
             return false;
-        if (parent->hasScopedHTMLStyleChild())
-            return false;
         if (parent->inlineStyle())
             return false;
         if (parent->isSVGElement() && toSVGElement(parent)->animatedSMILStyleProperties())