Update analysis server and integration tests to match new ChangeContentOverlay.

pkg/analysis_server/test/domain_analysis_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 test.domain.analysis;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/error.dart';
@@ skipping 200 matching lines @@
       List<AnalysisError> errors = helper.getTestErrors();
       expect(errors, isEmpty);
       // Add the file to the cache
       helper.sendContentChange({
         TYPE: ADD,
         CONTENT: initialContent
       });
       // update code
       helper.sendContentChange({
         TYPE: CHANGE,
-        REPLACEMENT: 'lib',
-        OFFSET: 'library '.length,
-        LENGTH: 'A;'.length,
+        EDITS: [{
+            REPLACEMENT: 'lib',
+            OFFSET: 'library '.length,
+            LENGTH: 'A;'.length
+          }]
       });
       // wait, there is an error
       return helper.waitForOperationsFinished().then((_) {
         List<AnalysisError> errors = helper.getTestErrors();
         expect(errors, hasLength(1));
       });
     });
   });
 
   test('change on disk, normal', () {
@@ skipping 394 matching lines @@
     return waitForServerOperationsPerformed(server);
   }
 
   static String _getCodeString(code) {
     if (code is List<String>) {
       code = code.join('\n');
     }
     return code as String;
   }
 }