lacros: Mark the message center mojo API as [Stable]

Mark crosapi.mojom.Bitmap as stable (it's simple and controlled by the
lacros project).

Mark crosapi.mojom.Notification as stable (its only interesting
dependency, ImageSkia, was recently stabilized).

Bug: 1113889
Test: presubmits
Change-Id: I0dbf3663d3bd4af72184d360be1f6f4269a5eab4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2388907Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Auto-Submit: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803998}

chromeos/crosapi/mojom/bitmap.mojom

@@ -5,7 +5,9 @@
 module crosapi.mojom;
 
 // Each pixel is represented by 4 bytes [RGBA].
+// NOTE: For UI images prefer gfx.mojom.ImageSkia, which supports high-DPI.
 // TODO(https://crbug.com/1094460): Use a more performant transport mechanism.
+[Stable]
 struct Bitmap {
   uint32 width;
   uint32 height;

chromeos/crosapi/mojom/message_center.mojom

@@ -10,34 +10,36 @@ import "mojo/public/mojom/base/string16.mojom";
 // Handles notifications created via the Notifications web platform API and the
 // chrome.notifications() extension API. Shows the notifications in the
 // message center. Implemented in ash-chrome.
+[Stable]
 interface MessageCenter {
   // Displays a notification. If the notification's ID is the same as an
   // existing notification, that notification is replaced. The delegate will be
   // called with user actions.
-  DisplayNotification(Notification notification,
-                      pending_remote<NotificationDelegate> delegate);
+  DisplayNotification@0(Notification notification,
+                        pending_remote<NotificationDelegate> delegate);
 
   // Closes a notification by the ID provided in |notification| above.
-  CloseNotification(string id);
+  CloseNotification@1(string id);
 };
 
 // Handles responses to user actions on notifications. Multiple actions may
 // occur on a single notification. For example, clicking a notification button
 // may not close the notification. Implemented in lacros-chrome.
+[Stable]
 interface NotificationDelegate {
   // Called when a notification previously displayed by the client is closed.
-  OnNotificationClosed(bool by_user);
+  OnNotificationClosed@0(bool by_user);
 
   // Called when the body of a notification is clicked.
-  OnNotificationClicked();
+  OnNotificationClicked@1();
 
   // Called when a notification that has buttons (e.g., "Learn more") receives a
   // click on one of the buttons.
-  OnNotificationButtonClicked(uint32 button_index);
+  OnNotificationButtonClicked@2(uint32 button_index);
 
   // Called when a notification's settings button has been pressed.
-  OnNotificationSettingsButtonClicked();
+  OnNotificationSettingsButtonClicked@3();
 
   // Called when a notification has been disabled (via inline settings).
-  OnNotificationDisabled();
+  OnNotificationDisabled@4();
 };

chromeos/crosapi/mojom/notification.mojom

@@ -12,7 +12,7 @@ import "url/mojom/url.mojom";
 
 // Type of notification to show. See the chrome.notifications extension API:
 // https://developer.chrome.com/extensions/notifications#type-TemplateType
-[Extensible]
+[Stable, Extensible]
 enum NotificationType {
   // Icon, title and message.
   kSimple = 0,
@@ -30,7 +30,7 @@ enum NotificationType {
 // How to display notifications when a fullscreen window is open. For example,
 // a child account time limit notification should appear over a fullscreen
 // video.
-[Extensible]
+[Stable, Extensible]
 enum FullscreenVisibility {
   // Do not show over fullscreen windows.
   kNone = 0,
@@ -40,6 +40,7 @@ enum FullscreenVisibility {
 };
 
 // List items for NotificationType::kList.
+[Stable]
 struct NotificationItem {
   mojo_base.mojom.String16 title;
   mojo_base.mojom.String16 message;
@@ -47,6 +48,7 @@ struct NotificationItem {
 
 // Data for each button. Implemented as a struct for extensibility (e.g. so we
 // could add icon buttons).
+[Stable]
 struct ButtonInfo {
   mojo_base.mojom.String16 title;
 };
@@ -56,6 +58,7 @@ struct ButtonInfo {
 // API. See documentation at:
 // https://developer.mozilla.org/en-US/docs/Web/API/notification
 // https://developer.chrome.com/extensions/notifications#type-NotificationOptions
+[Stable]
 struct Notification {
   // Type of notification to show.
   NotificationType type;