Add a WebDocument::watchCssSelectors(selectors)

Source/core/dom/Element.h

Index: Source/core/dom/Element.h
diff --git a/Source/core/dom/Element.h b/Source/core/dom/Element.h
index 1b35d586547e802b1d3fd71aeff40bb827d7a799..e9fe35eaac662332d6870cfefb1c34c8130407e9 100644
--- a/Source/core/dom/Element.h
+++ b/Source/core/dom/Element.h
@@ -749,6 +749,12 @@ private:
 
     virtual RenderStyle* virtualComputedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) { return computedStyle(pseudoElementSpecifier); }
 
+    enum AddOrRemove {
+        Add,
+        Remove,

[esprehn, 2013/09/04 06:08:28]

SelectorAdded, SelectorRemoved

and I'd suggest renaming the enum something that's not an "Or" of the values.

[Jeffrey Yasskin, 2013/09/12 22:09:59]

The enum's gone now.

+    };
+    void updateCallbackSelectors(AddOrRemove);
+
     // cloneNode is private so that non-virtual cloneElementWithChildren and cloneElementWithoutChildren
     // are used instead.
     virtual PassRefPtr<Node> cloneNode(bool deep) OVERRIDE;