Make stylesheet owner node a reference instead of pointer.

third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp b/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
index 16849f568df93aa0795babede148f8d42712962e..8deacef88a5802f3525cfd89e12daaaf10724a5f 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
@@ -1365,7 +1365,7 @@ void InspectorStyleSheet::innerSetText(const String& text, bool markAsLocallyMod
     if (toCSSImportRule(m_pageStyleSheet->ownerRule()))
         sourceDataSheet = CSSStyleSheet::create(styleSheet, toCSSImportRule(m_pageStyleSheet->ownerRule()));
     else
-        sourceDataSheet = CSSStyleSheet::create(styleSheet, m_pageStyleSheet->ownerNode());
+        sourceDataSheet = CSSStyleSheet::create(styleSheet, *m_pageStyleSheet->ownerNode());
 
     m_parsedFlatRules.clear();
     collectFlatRules(sourceDataSheet, &m_parsedFlatRules);