Add a WebDocument::watchCssSelectors(selectors)

Source/core/css/resolver/StyleResolver.cpp

Index: Source/core/css/resolver/StyleResolver.cpp
diff --git a/Source/core/css/resolver/StyleResolver.cpp b/Source/core/css/resolver/StyleResolver.cpp
index c8c48e98e7159e718021d5e9eb87a989051db3b8..aa97302bc28a52b1a32a6c30f5e863fa1fcbd1b0 100644
--- a/Source/core/css/resolver/StyleResolver.cpp
+++ b/Source/core/css/resolver/StyleResolver.cpp
@@ -180,7 +180,7 @@ StyleResolver::StyleResolver(Document* document, bool matchAuthorAndUserStyles)
     m_styleTree.clear();
 
     DocumentStyleSheetCollection* styleSheetCollection = document->styleSheetCollection();
-    m_ruleSets.initUserStyle(styleSheetCollection, *m_medium, *this);
+    m_ruleSets.initUserStyle(styleSheetCollection, document->watchedCallbackSelectors(), *m_medium, *this);
 
 #if ENABLE(SVG_FONTS)
     if (document->svgExtensions()) {
@@ -1874,6 +1874,9 @@ void StyleResolver::applyProperties(const StylePropertySet* properties, StyleRul
 {
     ASSERT((propertyWhitelistType != PropertyWhitelistRegion) || m_state.regionForStyling());
     InspectorInstrumentationCookie cookie = InspectorInstrumentation::willProcessRule(document(), rule, this);
+#if ENABLE(CSS_CALLBACKS)
+    m_state.setRule(rule);
+#endif
 
     unsigned propertyCount = properties->propertyCount();
     for (unsigned i = 0; i < propertyCount; ++i) {