Add ArcNotificationManager for new ARC notification

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.
 
 module arc;
 
 // These values must be matched with the NOTIFICATION_EVENT_* constants in
 // com.android.server.ArcNotificationListenerService.
 enum ArcNotificationEvent {
   BODY_CLICKED = 0,
   CLOSED = 1,
   // Five buttons at maximum (message_center::kNotificationMaximumItems = 5).
   BUTTON1_CLICKED = 2,
   BUTTON2_CLICKED = 3,
   BUTTON3_CLICKED = 4,
   BUTTON4_CLICKED = 5,
   BUTTON5_CLICKED = 6,
+  MAX = BUTTON5_CLICKED
 };
 
 // These values must be matched with the NOTIFICATION_TYPE_* constants in
 // com.android.server.ArcNotificationListenerService.
 enum ArcNotificationType {
   BASIC = 0,
   IMAGE = 1,
   PROGRESS = 2,
+  MAX = PROGRESS
 };
 
 struct ArcNotificationData {
   // Identifier of notification
   string key;
   // Type of notification
   ArcNotificationType type;
   // Body message of notification
   string message;
   // Title of notification
@@ skipping 25 matching lines @@
 
 // TODO(lhchavez): Migrate all request/response messages to Mojo.
 interface NotificationsInstance {
   // Establishes full-duplex communication with the host.
   Init(NotificationsHost host_ptr);
 
   // Sends an event from Chrome notification UI to Android.
   // |event| is a type of occured event.
   SendNotificationEventToAndroid(string key, ArcNotificationEvent event);
 };