add telemetry

src/vs/platform/userDataSync/common/abstractSynchronizer.ts

@@ -89,7 +89,7 @@ export abstract class AbstractSynchroniser extends Disposable {
 		@IUserDataSyncStoreService protected readonly userDataSyncStoreService: IUserDataSyncStoreService,
 		@IUserDataSyncBackupStoreService protected readonly userDataSyncBackupStoreService: IUserDataSyncBackupStoreService,
 		@IUserDataSyncEnablementService protected readonly userDataSyncEnablementService: IUserDataSyncEnablementService,
-		@ITelemetryService private readonly telemetryService: ITelemetryService,
+		@ITelemetryService protected readonly telemetryService: ITelemetryService,
 		@IUserDataSyncLogService protected readonly logService: IUserDataSyncLogService,
 		@IConfigurationService protected readonly configurationService: IConfigurationService,
 	) {

src/vs/platform/userDataSync/common/settingsSync.ts

@@ -429,6 +429,7 @@ export class SettingsSynchroniser extends AbstractJsonFileSynchroniser {
 				return;
 			}
 
+			this.telemetryService.publicLog2('sync/settingsCorrupted');
 			const settingsSyncContent = this.parseSettingsSyncContent(syncData.content);
 			if (!settingsSyncContent || !settingsSyncContent.settings) {
 				return;