Plumb Blink notification actions to button UI on desktop

content/public/common/platform_notification_data.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_PLATFORM_NOTIFICATION_DATA_H_
 #define CONTENT_PUBLIC_COMMON_PLATFORM_NOTIFICATION_DATA_H_
 
 #include <string>
 #include <vector>
 
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "url/gurl.h"
 
 namespace content {
 
+// A notification action (button); corresponds to Blink WebNotificationAction.
+struct CONTENT_EXPORT PlatformNotificationAction {
+  PlatformNotificationAction();
+  ~PlatformNotificationAction();
+
+  // Action name that the author can use to distinguish them.
+  std::string action;
+
+  // Title of the button.
+  base::string16 title;
+};
+
 // Structure representing the information associated with a Web Notification.
 // This struct should include the developer-visible information, kept
 // synchronized with the WebNotificationData structure defined in the Blink API.
 struct CONTENT_EXPORT PlatformNotificationData {
   PlatformNotificationData();
   ~PlatformNotificationData();
 
   // The maximum size of developer-provided data to be stored in the |data|
   // property of this structure.
   static const size_t kMaximumDeveloperDataSize = 1024 * 1024;
@@ skipping 28 matching lines @@
   // Vibration API. https://www.w3.org/TR/vibration/
   std::vector<int> vibration_pattern;
 
   // Whether default notification indicators (sound, vibration, light) should
   // be suppressed.
   bool silent = false;
 
   // Developer-provided data associated with the notification, in the form of
   // a serialized string. Must not exceed |kMaximumDeveloperDataSize| bytes.
   std::vector<char> data;
+
+  // Actions that should be shown as buttons on the notification.
+  std::vector<PlatformNotificationAction> actions;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_PLATFORM_NOTIFICATION_DATA_H_