Delete deprecated synced notifications code

sync/protocol/synced_notification_render.proto

-// Copyright (c) 2012 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.
-//
-
-// Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
-// any fields in this file.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-option retain_unknown_fields = true;
-
-package sync_pb;
-
-// Data that is used directly by endpoints to render notifications in the case
-// where no "native" app can handle the notification.
-message SyncedNotificationRenderInfo {
-  // Render information for the collapsed (summary) view of a notification.
-  optional CollapsedInfo collapsed_info = 1;
-
-  // Render information for the expanded view of a notification.
-  optional ExpandedInfo expanded_info = 2;
-}
-
-// Render information for the collapsed (summary) view of a coalesced
-// notification.
-message CollapsedInfo {
-  optional SimpleCollapsedLayout simple_collapsed_layout = 1;
-
-  // The creation time of the notification in microseconds since the UNIX
-  // epoch.
-  optional uint64 creation_timestamp_usec = 2;
-
-  // The default destination target.
-  optional SyncedNotificationDestination default_destination = 3;
-
-  repeated Target target = 4;
-
-  // Defines a repeated list of meta tags that provide some context on what
-  // this collapsed info is describing. Nothing about the display of this
-  // collapsed info is defined by the meta tags.
-  repeated string meta_tag = 5;
-}
-
-// Render information for the expanded (detail) view of a coalesced
-// notification.
-message ExpandedInfo {
-  optional SimpleExpandedLayout simple_expanded_layout = 1;
-
-  // Collapsed information for each notification in the coalesced group.
-  repeated CollapsedInfo collapsed_info = 2;
-
-  // A set of targets for actions the user can take, or destinations the
-  // viewer can be taken to. These relate to the coalesced notification.
-  repeated Target target = 3;
-
-  // Enhanced context for the expanded view.
-  repeated string meta_tag = 4;
-}
-
-message SimpleCollapsedLayout {
-  // Application icon.
-  optional SyncedNotificationImage app_icon = 1;
-
-  // Profile image(s) of the notification creator(s) to show in the
-  // collapsed UI.
-  repeated SyncedNotificationProfileImage profile_image = 2;
-
-  // Heading - often the name(s) of the notification creator(s).
-  optional string heading = 3;
-
-  // Description - often the action that generated the notification.
-  optional string description = 4;
-
-  // Media - one or more shared media items.
-  repeated Media media = 5;
-
-  // Annotation - often the annotation of the entity generating the
-  // notification.
-  optional string annotation = 6;
-}
-
-message SimpleExpandedLayout {
-  // Title - often the title of the underlying entity referred to by the
-  // notification(s).
-  optional string title = 1;
-
-  // Text content - often a snippet of text from the underlying entity
-  // reference or the notification.
-  optional string text = 2;
-
-  repeated Media media = 3;
-
-  // Profile image, usually this is the creator of the referenced entity.
-  optional SyncedNotificationProfileImage profile_image = 4;
-
-  // A set of targets for actions the user can take, or destinations the
-  // viewer can be taken to. Usually these relate to the referenced entity.
-  repeated Target target = 5;
-}
-
-// Media.
-message Media {
-  // TOOD(jro): Do we need other media types?
-  optional SyncedNotificationImage image = 1;
-}
-
-// Secondary destinations and actions grouped into a message to account for
-// ordering.
-message Target {
-  // URL that the user will be taken to by clicking on the notification.
-  optional SyncedNotificationDestination destination = 1;
-  // URI to POST if the user clicks on a button.
-  optional SyncedNotificationAction action = 2;
-
-  // A key to identify this target within a group of targets.
-  optional string target_key = 3;
-}
-
-// A Destination is a target URL that the user can be taken to by clicking on or
-// selecting the notification or part thereof.
-message SyncedNotificationDestination {
-  // The description for the link to the destination.
-  optional string text = 1;
-
-  // The icon to use for the link to the destination.
-  optional SyncedNotificationImage icon = 2;
-
-  // The destination URL.
-  optional string url = 3;
-
-  // Optional label to aid accessibility.
-  optional string accessibility_label = 4;
-}
-
-// An Action encapsulates an UI component that trigger certain programmable
-// actions.  Depending on the endpoint, this may show up as a HTML button, an
-// action button associated with the notification on native mobile, a link, or
-// even the notification card itself.
-message SyncedNotificationAction {
-  // The description for the Action.
-  optional string text = 1;
-
-  // The icon to use for the Action.
-  optional SyncedNotificationImage icon = 2;
-
-  // The URL that performs the action.
-  optional string url = 3;
-
-  // Additional request data.
-  optional string request_data = 4;
-
-  // Optional label to aid accessibility.
-  optional string accessibility_label= 5;
-
-  // Defines a repeated list of meta tags that provide some context on this
-  // action. Nothing about the display of this action is defined by the tags.
-  repeated string meta_tag = 6;
-}
-
-message SyncedNotificationImage {
-  // Note that the image may be from any source. Clients wishing to resize the
-  // image should ensure the image is proxied appropriately.
-  optional string url = 1;
-  optional string alt_text = 2;
-  optional int32 preferred_width = 3;
-  optional int32 preferred_height = 4;
-}
-
-message SyncedNotificationProfileImage {
-  // Url for the image.
-  optional string image_url = 1;
-  // Object id for the image.
-  optional string oid = 2;
-  // Name to display for this image.
-  optional string display_name = 3;
-}