Issue 9845. Compare runtime types using ==.

pkg/analyzer_experimental/lib/src/generated/source_io.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.source.io;
 
 import 'source.dart';
 import 'dart:io';
 import 'dart:uri';
 import 'java_core.dart';
 import 'java_io.dart';
@@ skipping 43 matching lines @@
    */
   FileBasedSource.con2(ContentCache contentCache2, JavaFile file3, bool inSystemLibrary2) {
     _jtd_constructor_329_impl(contentCache2, file3, inSystemLibrary2);
   }
   _jtd_constructor_329_impl(ContentCache contentCache2, JavaFile file3, bool inSystemLibrary2) {
     this._contentCache = contentCache2;
     this._file = file3;
     this._inSystemLibrary = inSystemLibrary2;
     this._fileUriString = file3.toURI().toString();
   }
-  bool operator ==(Object object) => object != null && identical(this.runtimeType, object.runtimeType) && _file == ((object as FileBasedSource))._file;
+  bool operator ==(Object object) => object != null && this.runtimeType == object.runtimeType && _file == ((object as FileBasedSource))._file;
   bool exists() => _contentCache.getContents(this) != null || (_file.exists() && !_file.isDirectory());
   void getContents(Source_ContentReceiver receiver) {
     {
       String contents = _contentCache.getContents(this);
       if (contents != null) {
         receiver.accept2(contents, _contentCache.getModificationStamp(this));
         return;
       }
     }
     receiver.accept2(_file.readAsStringSync(), _file.lastModified());
@@ skipping 189 matching lines @@
    */
   FileUriResolver() : super() {
   }
   Source resolveAbsolute(ContentCache contentCache, Uri uri) {
     if (!isFileUri(uri)) {
       return null;
     }
     return new FileBasedSource.con1(contentCache, new JavaFile.fromUri(uri));
   }
 }