Introduce a new API to handle native notification clicks

chrome/browser/notifications/message_center_display_service.h

Index: chrome/browser/notifications/message_center_display_service.h
diff --git a/chrome/browser/notifications/message_center_display_service.h b/chrome/browser/notifications/message_center_display_service.h
index bbe9063af7718d229ff39e4437fe438befe3dd7f..5263afc8278dcdaf27e0f8aa907c7a575afe4dd2 100644
--- a/chrome/browser/notifications/message_center_display_service.h
+++ b/chrome/browser/notifications/message_center_display_service.h
@@ -7,6 +7,7 @@
 
 #include "base/macros.h"
 #include "chrome/browser/notifications/notification_display_service.h"
+#include "chrome/browser/notifications/notification_operation_common.h"
 
 class Notification;
 class NotificationUIManager;
@@ -21,10 +22,20 @@ class MessageCenterDisplayService : public NotificationDisplayService {
   ~MessageCenterDisplayService() override;
 
   // NotificationDisplayService implementation.
-  void Display(const std::string& notification_id,
-               const Notification& notification) override;
-  void Close(const std::string& notification_id) override;
+  void Display(
+      notification_operation_common::NotificationHandlerType notification_type,
+      const std::string& notification_id,
+      const Notification& notification) override;
+  void Close(
+      notification_operation_common::NotificationHandlerType notification_type,
+      const std::string& notification_id) override;
   bool GetDisplayed(std::set<std::string>* notifications) const override;
+  void ProcessNotificationOperation(
+      notification_operation_common::NotificationOperation operation,
+      notification_operation_common::NotificationHandlerType notification_type,
+      const std::string& origin,
+      const std::string& notification_id,
+      int action_index) override;
   bool SupportsNotificationCenter() const override;
 
  private: