base: Add Is* functions to Value class.

chrome/renderer/extensions/extension_api_json_validity_unittest.cc

Index: chrome/renderer/extensions/extension_api_json_validity_unittest.cc
diff --git a/chrome/renderer/extensions/extension_api_json_validity_unittest.cc b/chrome/renderer/extensions/extension_api_json_validity_unittest.cc
index 414c6c343307945b31fd75061f17c2b8633468a4..c52c065547d56641f4035b4ed7fc4d4592604e11 100644
--- a/chrome/renderer/extensions/extension_api_json_validity_unittest.cc
+++ b/chrome/renderer/extensions/extension_api_json_validity_unittest.cc
@@ -33,7 +33,7 @@ bool FindDictionaryWithProperyValue(ListValue* list,
                                     std::string* out_error_message) {
   bool found = false;
   for (ListValue::const_iterator it = list->begin(); it != list->end(); ++it) {
-    if (!(*it)->IsType(Value::TYPE_DICTIONARY)) {
+    if (!(*it)->IsDictionary()) {
       *out_error_message = "List contains an item taht is not a dictionary.";
       return false;
     }