Plumb Blink notification actions to button UI on desktop

content/child/notifications/notification_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/notifications/notification_manager.h"
 
 #include <cmath>
 
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/thread_local.h"
 #include "content/child/notifications/notification_data_conversions.h"
 #include "content/child/notifications/notification_dispatcher.h"
 #include "content/child/service_worker/web_service_worker_registration_impl.h"
 #include "content/child/thread_safe_sender.h"
 #include "content/child/worker_task_runner.h"
+#include "content/common/notification_constants.h"
 #include "content/public/common/platform_notification_data.h"
 #include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/platform/modules/notifications/WebNotificationDelegate.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 using blink::WebNotificationPermission;
 
 namespace content {
 namespace {
 
@@ skipping 184 matching lines @@
       blink::WebNotificationPermissionAllowed;
   // TODO(mkwst): This is potentially doing the wrong thing with unique
   // origins. Perhaps also 'file:', 'blob:' and 'filesystem:'. See
   // https://crbug.com/490074 for detail.
   thread_safe_sender_->Send(new PlatformNotificationHostMsg_CheckPermission(
       GURL(origin.toString()), &permission));
 
   return permission;
 }
 
+size_t NotificationManager::maxActions() {
+  return kPlatformNotificationMaxActions;
+}
+
 bool NotificationManager::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(NotificationManager, message)
     IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidShow, OnDidShow);
     IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidShowPersistent,
                         OnDidShowPersistent)
     IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidClose, OnDidClose);
     IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidClick, OnDidClick);
     IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidGetNotifications,
                         OnDidGetNotifications)
@@ skipping 104 matching lines @@
 
   // TODO(mkwst): This is potentially doing the wrong thing with unique
   // origins. Perhaps also 'file:', 'blob:' and 'filesystem:'. See
   // https://crbug.com/490074 for detail.
   thread_safe_sender_->Send(new PlatformNotificationHostMsg_ShowPersistent(
       request_id, service_worker_registration_id, GURL(origin.toString()), icon,
       ToPlatformNotificationData(notification_data)));
 }
 
 }  // namespace content