SCMActionButton overflow improvements

src/vs/workbench/api/common/extHost.protocol.ts

@@ -1085,10 +1085,15 @@ export interface SCMProviderFeatures {
 	count?: number;
 	commitTemplate?: string;
 	acceptInputCommand?: modes.Command;
-	actionButton?: ICommandDto | null;
+	actionButton?: SCMActionButtonDto | null;
 	statusBarCommands?: ICommandDto[];
 }
 
+export interface SCMActionButtonDto {
+	command: ICommandDto;
+	description?: string;
+}
+
 export interface SCMGroupFeatures {
 	hideWhenEmpty?: boolean;
 }