Update the background color of ARC notifications when notification settings is opened.

components/arc/common/notifications.mojom

 // Copyright 2015 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.
 //
 // Next MinVersion: 11
 
 module arc.mojom;
 
 import "bitmap.mojom";
 
@@ skipping 37 matching lines @@
   string label;
 };
 
 [Extensible, MinVersion=10]
 enum ArcNotificationExpandState {
   FIXED_SIZE = 0,
   COLLAPSED = 1,
   EXPANDED = 2,
 };
 
+// These values represent what shows in an ARC custom notification.
+[Extensible, MinVersion=11]
+enum ArcNotificationShownContents {
+  // The normal notification contents are shown.
+  CONTENTS_SHOWN = 0,
+  // The notification settings view is shown.
+  SETTINGS_SHOWN = 1,
+};
+
 struct ArcNotificationData {
   // Identifier of notification
   string key;
   // Type of notification
   ArcNotificationType type;
   // Body message of notification
   string message;
   // Title of notification
   string title;
   // Mimetype of |icon_data|
@@ skipping 33 matching lines @@
   [MinVersion=7]
   ArcBitmap? snapshot_image;
   [MinVersion=7]
   float snapshot_image_scale;
   // Accessibility text
   [MinVersion=8]
   string? accessible_name;
   // Flag if the notification is expandable
   [MinVersion=10]
   ArcNotificationExpandState expand_state;
+  // Flag for what shows in a notification.
+  [MinVersion=11]
+  ArcNotificationShownContents shown_contents;
 };
 
 [MinVersion=2]
 struct ArcToastData {
   // Unique identifier
   string id;
   // Toast text.
   string? text;
   // Toast duration in milliseconds. If -1, the toast will be displayed until
   // the dismiss button is clicked.
@@ skipping 43 matching lines @@
   // side.
   [MinVersion=7]
   CloseNotificationWindow@3(string key);
 
   // Requests to Android side to open notification settings.
   // |key| is the identifier of the notification which is generated by Android
   // side.
   [MinVersion=9]
   OpenNotificationSettings@4(string key);
 };