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

chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc

Index: chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc b/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
index 08710f2bfd10fac827b80b7e724ee44d115f4075..cc8ca0e2752945b7b8ef8fa872df4ab6dbc6af8c 100644
--- a/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc
@@ -394,7 +394,8 @@ bool CellularConfigDocument::LoadFromFile(const FilePath& config_path) {
   if (!file_util::ReadFileToString(config_path, &config))
     return false;
 
-  scoped_ptr<Value> root(base::JSONReader::Read(config, true));
+  scoped_ptr<Value> root(
+      base::JSONReader::Read(config, base::JSON_ALLOW_TRAILING_COMMAS));
   DCHECK(root.get() != NULL);
   if (!root.get() || root->GetType() != Value::TYPE_DICTIONARY) {
     LOG(WARNING) << "Bad cellular config file";