Context Menus now uses the JSON Schema Compiler.

chrome/browser/extensions/menu_manager.cc

Index: chrome/browser/extensions/menu_manager.cc
diff --git a/chrome/browser/extensions/menu_manager.cc b/chrome/browser/extensions/menu_manager.cc
index e599f3bd238cfba0ce9ff0075d3ee8f225ea2500..fd506a93044f51725765d7863df4607c0ebf9fa2 100644
--- a/chrome/browser/extensions/menu_manager.cc
+++ b/chrome/browser/extensions/menu_manager.cc
@@ -268,6 +268,24 @@ bool MenuItem::PopulateURLPatterns(const DictionaryValue& properties,
   return true;
 }
 
+bool MenuItem::PopulateURLPatterns(ListValue* document_url_patterns,
+                                   ListValue* target_url_patterns,
+                                   std::string* error) {

[not at google - send to devlin, 2012/07/26 04:16:20]

When you convert these to taking vectors, you could either call AddPattern
directly, or add an alternative Populate method to URLPatternSet. I prefer the
latter.

[chebert, 2012/07/27 01:28:24]

Done.

+  if (document_url_patterns) {
+    if (!document_url_patterns_.Populate(
+            *document_url_patterns, URLPattern::SCHEME_ALL, true, error)) {
+      return false;
+    }
+  }
+  if (target_url_patterns) {
+    if (!target_url_patterns_.Populate(
+            *target_url_patterns, URLPattern::SCHEME_ALL, true, error)) {
+      return false;
+    }
+  }
+  return true;
+}
+
 MenuManager::MenuManager(Profile* profile)
     : profile_(profile) {
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,