PassRefPtr is stolen by first agent invocation.

Source/core/inspector/CodeGeneratorInstrumentation.py

 #!/usr/bin/env python
 # Copyright (c) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 335 matching lines @@
             maybe_return = ""
         else:
             maybe_return = "return "
 
         return template.substitute(
             None,
             name=self.name,
             agent_class=agent_class,
             agent_fetch=agent_fetch,
             maybe_return=maybe_return,
-            params_agent=", ".join(map(Parameter.to_str_name, self.params_impl)[1:]))
+            params_agent=", ".join(map(Parameter.to_str_value, self.params_impl)[1:]))
 
 
 class Parameter:
     def __init__(self, source):
         self.options = []
         match, source = match_and_consume("\[(\w*)\]", source)
         if match:
             self.options.append(match.group(1))
 
         parts = map(str.strip, source.split("="))
@@ skipping 10 matching lines @@
             min_type_tokens = 1
 
         if len(param_decl.split(" ")) > min_type_tokens:
             parts = param_decl.split(" ")
             self.type = " ".join(parts[:-1])
             self.name = parts[-1]
         else:
             self.type = param_decl
             self.name = generate_param_name(self.type)
 
+        if re.match("PassRefPtr<", param_decl):

[aandrey, 2014/03/20 06:16:11]

maybe also PassOwnPtr?

+            self.value = "%s.get()" % self.name
+        else:
+            self.value = self.name
+
+
     def to_str_full(self):
         if self.default_value is None:
             return self.to_str_class_and_name()
         return "%s %s = %s" % (self.type, self.name, self.default_value)
 
     def to_str_class_and_name(self):
         return "%s %s" % (self.type, self.name)
 
     def to_str_class(self):
         return self.type
 
     def to_str_name(self):
         return self.name
 
+    def to_str_value(self):
+        return self.value
+
 
 def generate_param_name(param_type):
     base_name = re.match("(const |PassRefPtr<)?(\w*)", param_type).group(2)
     return "param" + base_name
 
 
 def agent_class_name(agent):
     custom_agent_names = ["PageDebugger", "PageRuntime", "WorkerRuntime"]
     if agent in custom_agent_names:
         return "%sAgent" % agent
@@ skipping 102 matching lines @@
     if not output_dirpath:
         raise Exception("Output directory must be specified")
 except Exception:
     # Work with python 2 and 3 http://docs.python.org/py3k/howto/pyporting.html
     exc = sys.exc_info()[1]
     sys.stderr.write("Failed to parse command-line arguments: %s\n\n" % exc)
     sys.stderr.write("Usage: <script> --output_dir <output_dir> InspectorInstrumentation.idl\n")
     exit(1)
 
 generate(input_path, output_dirpath)