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 4ce361fa0a3888294239a57f105410b90cae761b..f13f8c3f8e20f528f8f7fdda3ff99ec057474b08 100644
--- a/Source/core/css/resolver/StyleResolver.cpp
+++ b/Source/core/css/resolver/StyleResolver.cpp
@@ -63,6 +63,7 @@
 #include "core/css/resolver/StyleAdjuster.h"
 #include "core/css/resolver/StyleBuilder.h"
 #include "core/css/resolver/ViewportStyleResolver.h"
+#include "core/dom/CSSSelectorWatch.h"
 #include "core/dom/DocumentStyleSheetCollection.h"
 #include "core/dom/NodeRenderStyle.h"
 #include "core/dom/NodeRenderingContext.h"
@@ -139,7 +140,7 @@ StyleResolver::StyleResolver(Document* document, bool matchAuthorAndUserStyles)
     m_styleTree.clear();
 
     DocumentStyleSheetCollection* styleSheetCollection = document->styleSheetCollection();
-    m_ruleSets.initUserStyle(styleSheetCollection, *m_medium, *this);
+    m_ruleSets.initUserStyle(styleSheetCollection, CSSSelectorWatch::from(document)->watchedCallbackSelectors(), *m_medium, *this);
 
 #if ENABLE(SVG_FONTS)
     if (document->svgExtensions()) {
@@ -1267,6 +1268,7 @@ template <StyleResolver::StyleApplicationPass pass>
 void StyleResolver::applyProperties(StyleResolverState& state, const StylePropertySet* properties, StyleRule* rule, bool isImportant, bool inheritedOnly, PropertyWhitelistType propertyWhitelistType)
 {
     ASSERT((propertyWhitelistType != PropertyWhitelistRegion) || state.regionForStyling());
+    state.setCurrentRule(rule);
 
     unsigned propertyCount = properties->propertyCount();
     for (unsigned i = 0; i < propertyCount; ++i) {