Context Menus now uses the JSON Schema Compiler.

tools/json_schema_compiler/cpp_type_generator.py

Index: tools/json_schema_compiler/cpp_type_generator.py
diff --git a/tools/json_schema_compiler/cpp_type_generator.py b/tools/json_schema_compiler/cpp_type_generator.py
index a0f57528ee58229149e3fce5cc759d4cb644c6f7..edfe79fc6707f616dd37923dcaf21bcee90baa11 100644
--- a/tools/json_schema_compiler/cpp_type_generator.py
+++ b/tools/json_schema_compiler/cpp_type_generator.py
@@ -277,6 +277,9 @@ class CppTypeGenerator(object):
     for type_ in self._namespace.types.values():
       for prop in type_.properties.values():
         dependencies |= self._PropertyTypeDependencies(prop)
+    for event in self._namespace.events.values():
+      for param in event.params:
+        dependencies |= self._PropertyTypeDependencies(param)
 
     dependency_namespaces = dict()
     for dependency in dependencies: