Remove JavaStringBuilder

pkg/analyzer/test/generated/all_the_rest.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // 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.all_the_rest_test;
 
 import 'dart:collection';
@@ skipping 423 matching lines @@
     bool success = expectedLineStarts.length == lineStarts.length;
     if (success) {
       for (int i = 0; i < lineStarts.length; i++) {
         if (expectedLineStarts[i] != lineStarts[i]) {
           success = false;
           break;
         }
       }
     }
     if (!success) {
-      JavaStringBuilder msg = new JavaStringBuilder();
-      msg.append("Expected line starts ");
+      StringBuffer buffer = new StringBuffer();
+      buffer.write("Expected line starts ");
       for (int start in expectedLineStarts) {
-        msg.append(start);
-        msg.append(", ");
+        buffer.write(start);
+        buffer.write(", ");
       }
-      msg.append(" but found ");
+      buffer.write(" but found ");
       for (int start in lineStarts) {
-        msg.append(start);
-        msg.append(", ");
+        buffer.write(start);
+        buffer.write(", ");
       }
-      JUnitTestCase.fail(msg.toString());
+      JUnitTestCase.fail(buffer.toString());
     }
     return firstToken;
   }
 }
 
 
 class AngularCompilationUnitBuilderTest extends AngularTest {
   void test_Decorator() {
     String mainContent = _createAngularSource(
         [
@@ skipping 10709 matching lines @@
     } else {
       JUnitTestCase.assertNotNullMsg("script ${scriptIndex}", scriptSource);
       String actualExternalScriptName = scriptSource.shortName;
       JUnitTestCase.assertEqualsMsg(
           "script ${scriptIndex}",
           _expectedExternalScriptName,
           actualExternalScriptName);
     }
   }
 }