views: Remove NativeTextButton::SetLabel() and replace all call sites with SetText().

views/window/dialog_client_view.cc

Index: views/window/dialog_client_view.cc
diff --git a/views/window/dialog_client_view.cc b/views/window/dialog_client_view.cc
index 7a1dc0968a0f6197b262ee92b36cb3dbad96e90d..08c833b8e3a06d9ca9d7d2d317db95901a187671 100644
--- a/views/window/dialog_client_view.cc
+++ b/views/window/dialog_client_view.cc
@@ -47,7 +47,7 @@ void UpdateButtonHelper(NativeTextButton* button_view,
                         MessageBoxFlags::DialogButton button) {
   std::wstring label = delegate->GetDialogButtonLabel(button);
   if (!label.empty())
-    button_view->SetLabel(label);
+    button_view->SetText(label);
   button_view->SetEnabled(delegate->IsDialogButtonEnabled(button));
   button_view->SetVisible(delegate->IsDialogButtonVisible(button));
 }