Plumb Blink notification actions to button UI on desktop

chrome/browser/notifications/platform_notification_service_impl.cc

Index: chrome/browser/notifications/platform_notification_service_impl.cc
diff --git a/chrome/browser/notifications/platform_notification_service_impl.cc b/chrome/browser/notifications/platform_notification_service_impl.cc
index 63508b3e29baa9914c59d5139ee622d74085dd82..50a3430c7d5f25a02a3006593ceb9e1bb3b814e3 100644
--- a/chrome/browser/notifications/platform_notification_service_impl.cc
+++ b/chrome/browser/notifications/platform_notification_service_impl.cc
@@ -335,6 +335,12 @@ Notification PlatformNotificationServiceImpl::CreateNotificationFromData(
   notification.set_vibration_pattern(notification_data.vibration_pattern);
   notification.set_silent(notification_data.silent);
 
+  std::vector<message_center::ButtonInfo> buttons;
+  for (const auto& action : notification_data.actions)
+    buttons.push_back(message_center::ButtonInfo(action.title));
+
+  notification.set_buttons(buttons);
+
   // Web Notifications do not timeout.
   notification.set_never_timeout(true);