[Autofill] Add UMA timing metrics for requestAutocomplete dialog.

chrome/browser/ui/views/autofill/autofill_dialog_views.cc

Index: chrome/browser/ui/views/autofill/autofill_dialog_views.cc
diff --git a/chrome/browser/ui/views/autofill/autofill_dialog_views.cc b/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
index 50cd3a986ab1257130f7b3404d955bc32b1e59f2..8604d5609daa7fab7064bad6344e70462eff652c 100644
--- a/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
+++ b/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
@@ -494,6 +494,16 @@ void AutofillDialogViews::ModelChanged() {
   }
 }
 
+void AutofillDialogViews::SubmitForTesting() {
+  if (Accept())
+    Hide();
+}
+
+void AutofillDialogViews::CancelForTesting() {
+  if (Cancel())
+    Hide();
+}
+
 string16 AutofillDialogViews::GetWindowTitle() const {
   return controller_->DialogTitle();
 }