Simplified code for styleResolverChanged.

Source/core/dom/ShadowTreeStyleSheetCollection.cpp

Index: Source/core/dom/ShadowTreeStyleSheetCollection.cpp
diff --git a/Source/core/dom/ShadowTreeStyleSheetCollection.cpp b/Source/core/dom/ShadowTreeStyleSheetCollection.cpp
index 38f05b3ccee3c0098d8c73f6a3cd66d81a9f649f..f554df934f6d79d8c2463e2e421d2c4df0eeec1d 100644
--- a/Source/core/dom/ShadowTreeStyleSheetCollection.cpp
+++ b/Source/core/dom/ShadowTreeStyleSheetCollection.cpp
@@ -87,7 +87,7 @@ void ShadowTreeStyleSheetCollection::collectStyleSheets(StyleEngine* engine, Sty
     }
 }
 
-bool ShadowTreeStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine, StyleResolverUpdateMode updateMode)
+void ShadowTreeStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine, StyleResolverUpdateMode updateMode)
 {
     StyleSheetCollection collection;
     collectStyleSheets(engine, collection);
@@ -115,8 +115,6 @@ bool ShadowTreeStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine
     m_scopingNodesForStyleScoped.didRemoveScopingNodes();
     collection.swap(*this);
     updateUsesRemUnits();
-
-    return change.requiresFullStyleRecalc;
 }
 
 }