Allow chrome.send to pass number, boolean, null and arrays of those

webkit/glue/cpp_variant.h

Index: webkit/glue/cpp_variant.h
diff --git a/webkit/glue/cpp_variant.h b/webkit/glue/cpp_variant.h
index 34f843a90a2cb31d811e89c865454a87f6907362..6ac866737accbfce4cc508be8c4103ec40995749 100644
--- a/webkit/glue/cpp_variant.h
+++ b/webkit/glue/cpp_variant.h
@@ -97,6 +97,10 @@ class CppVariant : public NPVariant {
   // Returns a vector of strings for the specified argument. This is useful
   // for converting a JavaScript array of strings into a vector of strings.
   std::vector<std::string> ToStringVector() const;
+  // Returns a vector of CppVariant for the specified variant. This should only
+  // be called on an Object. If the object has no "length" property an empty
+  // vector is returned.
+  std::vector<CppVariant> ToVector() const;
 
   // Invoke method of the given name on an object with the supplied arguments.
   // The first argument should be the object on which the method is to be