Fix autofill pyauto tests

chrome/browser/automation/testing_automation_provider.cc

Index: chrome/browser/automation/testing_automation_provider.cc
diff --git a/chrome/browser/automation/testing_automation_provider.cc b/chrome/browser/automation/testing_automation_provider.cc
index 9012d3c303f2b56ad4db74be2db2e81e3eab6b50..4b2f0aa4d28366d49d885f02c791fc23f8dd3cec 100644
--- a/chrome/browser/automation/testing_automation_provider.cc
+++ b/chrome/browser/automation/testing_automation_provider.cc
@@ -3774,15 +3774,9 @@ void TestingAutomationProvider::FillAutoFillProfile(
   ListValue* profiles = NULL;
   ListValue* cards = NULL;
 
-  if (!args->GetList("profiles", &profiles)) {
-    reply.SendError("Invalid or missing profiles list");
-    return;
-  }
-
-  if (!args->GetList("credit_cards", &cards)) {
-    reply.SendError("Invalid or missing credit_cards list");
-    return;
-  }
+  // It's ok for profiles/credit_cards elements to be missing.
+  args->GetList("profiles", &profiles);
+  args->GetList("credit_cards", &cards);
 
   std::string error_mesg;