Issue 9845. Compare runtime types using ==.

pkg/analyzer_experimental/test/generated/test_support.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.test_support;
 
 import 'dart:collection';
 import 'dart:uri';
 import 'package:analyzer_experimental/src/generated/java_core.dart';
 import 'package:analyzer_experimental/src/generated/java_engine.dart';
 import 'package:analyzer_experimental/src/generated/java_junit.dart';
@@ skipping 271 matching lines @@
    * @throws AssertionFailedError with
    */
   void fail(List<AnalysisError> expectedErrors) {
     PrintStringWriter writer = new PrintStringWriter();
     writer.print("Expected ");
     writer.print(expectedErrors.length);
     writer.print(" errors:");
     for (AnalysisError error in expectedErrors) {
       Source source16 = error.source;
       LineInfo lineInfo = _lineInfoMap[source16];
-      writer.println();
+      writer.newLine();
       if (lineInfo == null) {
         int offset10 = error.offset;
         writer.printf("  %s %s (%d..%d)", [source16 == null ? "" : source16.shortName, error.errorCode, offset10, offset10 + error.length]);
       } else {
         LineInfo_Location location = lineInfo.getLocation(error.offset);
         writer.printf("  %s %s (%d, %d/%d)", [source16 == null ? "" : source16.shortName, error.errorCode, location.lineNumber, location.columnNumber, error.length]);
       }
     }
-    writer.println();
+    writer.newLine();
     writer.print("found ");
     writer.print(_errors.length);
     writer.print(" errors:");
     for (AnalysisError error in _errors) {
       Source source17 = error.source;
       LineInfo lineInfo = _lineInfoMap[source17];
-      writer.println();
+      writer.newLine();
       if (lineInfo == null) {
         int offset11 = error.offset;
         writer.printf("  %s %s (%d..%d): %s", [source17 == null ? "" : source17.shortName, error.errorCode, offset11, offset11 + error.length, error.message]);
       } else {
         LineInfo_Location location = lineInfo.getLocation(error.offset);
         writer.printf("  %s %s (%d, %d/%d): %s", [source17 == null ? "" : source17.shortName, error.errorCode, location.lineNumber, location.columnNumber, error.length, error.message]);
       }
     }
     JUnitTestCase.fail(writer.toString());
   }
@@ skipping 243 matching lines @@
     }
   }
   /**
    * Convert the given array of lines into a single source string.
    * @param lines the lines to be merged into a single source string
    * @return the source string composed of the given lines
    */
   static String createSource(List<String> lines) {
     PrintStringWriter writer = new PrintStringWriter();
     for (String line in lines) {
-      writer.printlnObject(line);
+      writer.println(line);
     }
     return writer.toString();
   }
   /**
    * Calculate the offset where the given strings differ.
    * @param str1 the first String to compare
    * @param str2 the second String to compare
    * @return the offset at which the strings differ (or <code>-1</code> if they do not)
    */
   static int getDiffPos(String str1, String str2) {
@@ skipping 108 matching lines @@
         return trampoline(target, arguments[0], arguments[1]);
       case 3:
         return trampoline(target, arguments[0], arguments[1], arguments[2]);
       case 4:
         return trampoline(target, arguments[0], arguments[1], arguments[2], arguments[3]);
       default:
         throw new IllegalArgumentException("Not implemented for > 4 arguments");
     }
   }
 }