refactor(compiler): move symbol extraction to AotCompiler

modules/@angular/compiler/src/aot/compiler_options.ts

@@ -0,0 +1,16 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+export interface AotCompilerOptions {
+  debug?: boolean;
+  locale?: string;
+  i18nFormat?: string;
+  translations?: string;
+  includeFilePattern?: RegExp;
+  excludeFilePattern?: RegExp;
+}