Modify the base::JSONReader interface to take a set of options rather than a boolean flag.

chrome/browser/policy/configuration_policy_handler_chromeos.cc

Index: chrome/browser/policy/configuration_policy_handler_chromeos.cc
diff --git a/chrome/browser/policy/configuration_policy_handler_chromeos.cc b/chrome/browser/policy/configuration_policy_handler_chromeos.cc
index ff43551ea6fd37cf4e57e1a59874aacca7c86a7f..2ad265556af51388961617b4304726ec11a2cb06 100644
--- a/chrome/browser/policy/configuration_policy_handler_chromeos.cc
+++ b/chrome/browser/policy/configuration_policy_handler_chromeos.cc
@@ -74,7 +74,8 @@ Value* NetworkConfigurationPolicyHandler::SanitizeNetworkConfig(
   if (!config->GetAsString(&json_string))
     return NULL;
 
-  scoped_ptr<Value> json_value(base::JSONReader::Read(json_string, true));
+  scoped_ptr<Value> json_value(
+      base::JSONReader::Read(json_string, base::JSON_ALLOW_TRAILING_COMMAS));
   if (!json_value.get() || !json_value->IsType(base::Value::TYPE_DICTIONARY))
     return NULL;