Introduce a new API to handle native notification clicks

chrome/browser/notifications/message_center_display_service.cc

Index: chrome/browser/notifications/message_center_display_service.cc
diff --git a/chrome/browser/notifications/message_center_display_service.cc b/chrome/browser/notifications/message_center_display_service.cc
index 8dc7420cafe2b9fdc9811c8ff68980b7a12b6de2..ebd3b15491625a10436df02eeb6529893adf73f1 100644
--- a/chrome/browser/notifications/message_center_display_service.cc
+++ b/chrome/browser/notifications/message_center_display_service.cc
@@ -15,12 +15,16 @@ MessageCenterDisplayService::MessageCenterDisplayService(
 
 MessageCenterDisplayService::~MessageCenterDisplayService() {}
 
-void MessageCenterDisplayService::Display(const std::string& notification_id,
-                                          const Notification& notification) {
+void MessageCenterDisplayService::Display(
+    notification_operation_common::NotificationHandlerType notification_type,
+    const std::string& notification_id,
+    const Notification& notification) {
   ui_manager_->Add(notification, profile_);
 }
 
-void MessageCenterDisplayService::Close(const std::string& notification_id) {
+void MessageCenterDisplayService::Close(
+    notification_operation_common::NotificationHandlerType notification_type,
+    const std::string& notification_id) {
   ui_manager_->CancelById(notification_id,
                           NotificationUIManager::GetProfileID(profile_));
 }
@@ -35,6 +39,16 @@ bool MessageCenterDisplayService::GetDisplayed(
   return true;
 }
 
+void MessageCenterDisplayService::ProcessNotificationOperation(
+    notification_operation_common::NotificationOperation operation,
+    notification_operation_common::NotificationHandlerType notification_type,
+    const std::string& origin,
+    const std::string& notification_id,
+    int action_index) {
+  // Message center based notifications don't receive operations from the
+  // outside world, everything is managed within chrome's notification center.
+}
+
 bool MessageCenterDisplayService::SupportsNotificationCenter() const {
   return false;
 }