Merge from vscode e558dc6ea73a75bd69d7a0b485f0e7e4194c66bf (#6864)

src/vs/monaco.d.ts

@@ -4790,6 +4790,10 @@ declare namespace monaco.languages {
 		Snippet = 25
 	}
 
+	export enum CompletionItemKindModifier {
+		Deprecated = 1
+	}
+
 	export enum CompletionItemInsertTextRule {
 		/**
 		 * Adjust whitespace/indentation of multiline insert texts to
@@ -4818,6 +4822,11 @@ declare namespace monaco.languages {
 		 * an icon is chosen by the editor.
 		 */
 		kind: CompletionItemKind;
+		/**
+		 * A modifier to the `kind` which affect how the item
+		 * is rendered, e.g. Deprecated is rendered with a strikeout
+		 */
+		kindModifier?: CompletionItemKindModifier;
 		/**
 		 * A human-readable string with additional information
 		 * about this item, like type or symbol information.