DevTools: show styles for shadow dom elements

Source/core/css/InspectorCSSOMWrappers.cpp

Index: Source/core/css/InspectorCSSOMWrappers.cpp
diff --git a/Source/core/css/InspectorCSSOMWrappers.cpp b/Source/core/css/InspectorCSSOMWrappers.cpp
index 324c0128f5c3d24585953170b4dd3e1f2d5e6f0c..7474b7f9e00d3f986be7f6df2033d4d6203b1cfe 100644
--- a/Source/core/css/InspectorCSSOMWrappers.cpp
+++ b/Source/core/css/InspectorCSSOMWrappers.cpp
@@ -105,7 +105,10 @@ void InspectorCSSOMWrappers::collectFromStyleSheets(const Vector<RefPtr<CSSStyle
 
 void InspectorCSSOMWrappers::collectFromStyleEngine(StyleEngine* styleSheetCollection)
 {
-    collectFromStyleSheets(styleSheetCollection->activeAuthorStyleSheets());
+    Vector<const Vector<RefPtr<CSSStyleSheet> >*> activeAuthorStyleSheets;
+    styleSheetCollection->getActiveAuthorStyleSheets(activeAuthorStyleSheets);
+    for (size_t i = 0; i < activeAuthorStyleSheets.size(); ++i)
+        collectFromStyleSheets(*activeAuthorStyleSheets[i]);
     collect(styleSheetCollection->pageUserSheet());
     collectFromStyleSheets(styleSheetCollection->documentUserStyleSheets());
 }