Fix for test_uriDoesNotExist_import_disappears_when_fixed().

pkg/analyzer/test/generated/compile_time_error_code_test.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.
 
 library analyzer.test.generated.compile_time_error_code_test;
 
 import 'dart:async';
 
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/error/codes.dart';
@@ skipping 6154 matching lines @@
 
     await computeAnalysisResult(test);
     assertErrors(test, [CompileTimeErrorCode.URI_DOES_NOT_EXIST]);
   }
 
   test_uriDoesNotExist_import_disappears_when_fixed() async {
     Source source = addSource("import 'target.dart';");
     await computeAnalysisResult(source);
     assertErrors(source, [CompileTimeErrorCode.URI_DOES_NOT_EXIST]);
 
-    // Check that the file is represented as missing.
-    Source target = analysisContext2
-        .getSourcesWithFullName(resourceProvider.convertPath("/target.dart"))
-        .first;
-    expect(analysisContext2.getModificationStamp(target), -1);
+    String targetPath = resourceProvider.convertPath('/target.dart');
+    if (enableNewAnalysisDriver) {
+      // Add an overlay in the same way as AnalysisServer.
+      fileContentOverlay[targetPath] = '';
+      driver.changeFile(targetPath);
+    } else {
+      // Check that the file is represented as missing.
+      Source target = analysisContext2.getSourcesWithFullName(targetPath).first;
+      expect(analysisContext2.getModificationStamp(target), -1);
 
-    // Add an overlay in the same way as AnalysisServer.
-    analysisContext2
-      ..setContents(target, "")
-      ..handleContentsChanged(target, null, "", true);
+      // Add an overlay in the same way as AnalysisServer.
+      analysisContext2
+        ..setContents(target, "")
+        ..handleContentsChanged(target, null, "", true);
+    }
 
     // Make sure the error goes away.
     await computeAnalysisResult(source);
     assertErrors(source, [HintCode.UNUSED_IMPORT]);
   }
 
   test_uriDoesNotExist_part() async {
     Source source = addSource(r'''
 library lib;
 part 'unknown.dart';''');
@@ skipping 237 matching lines @@
         source, [CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR]);
     verify([source]);
     reset();
   }
 
   Future<Null> _check_wrongNumberOfParametersForOperator1(String name) async {
     await _check_wrongNumberOfParametersForOperator(name, "");
     await _check_wrongNumberOfParametersForOperator(name, "a, b");
   }
 }