Implements SendAutocheckoutStatus API calls for stats tracking.

chrome/browser/ui/autofill/autofill_dialog_controller_impl.h

Index: chrome/browser/ui/autofill/autofill_dialog_controller_impl.h
diff --git a/chrome/browser/ui/autofill/autofill_dialog_controller_impl.h b/chrome/browser/ui/autofill/autofill_dialog_controller_impl.h
index c0df09302751f11794184ca5ac85b0548186d3e1..804c786395b283acbea52eb67d6c66a2feaa7af5 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_controller_impl.h
+++ b/chrome/browser/ui/autofill/autofill_dialog_controller_impl.h
@@ -69,7 +69,8 @@ class AutofillDialogControllerImpl : public AutofillDialogController,
       const GURL& source_url,
       const AutofillMetrics& metric_logger,
       const DialogType dialog_type,
-      const base::Callback<void(const FormStructure*)>& callback);
+      const base::Callback<void(const FormStructure*,
+                                const std::string&)>& callback);
   virtual ~AutofillDialogControllerImpl();
 
   static void RegisterUserPrefs(PrefRegistrySyncable* registry);
@@ -331,8 +332,9 @@ class AutofillDialogControllerImpl : public AutofillDialogController,
   // The SSL info from the invoking site.
   content::SSLStatus ssl_status_;
 
-  // The callback via which we return the collected data.
-  base::Callback<void(const FormStructure*)> callback_;
+  // The callback via which we return the collected data and, if Online Wallet
+  // was used, the Google transaction id.
+  base::Callback<void(const FormStructure*, const std::string&)> callback_;
 
   // The AccountChooserModel acts as the MenuModel for the account chooser,
   // and also tracks which data source the dialog is using.