Refactor: Removed ReplacementRange from test and ReplacementRange from src/. Copied contents of tes…

pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart

 // Copyright (c) 2017, 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.
 
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/src/utilities/completion/completion_core.dart';
 import 'package:analyzer_plugin/src/utilities/completion/completion_target.dart';
 import 'package:analyzer_plugin/utilities/completion/completion_core.dart';
 import 'package:analyzer_plugin/utilities/completion/relevance.dart';
+import 'package:analyzer_plugin/utilities/completion/replacement_range.dart';
 import 'package:test/test.dart';
 
 import '../../support/abstract_context.dart';
 import 'flutter_util.dart';
-import 'replacement_range.dart';
 
 int suggestionComparator(CompletionSuggestion s1, CompletionSuggestion s2) {
   String c1 = s1.completion.toLowerCase();
   String c2 = s2.completion.toLowerCase();
   return c1.compareTo(c2);
 }
 
 abstract class DartCompletionContributorTest extends AbstractContextTest {
   static const String _UNCHECKED = '__UNCHECKED__';
   String testFile;
@@ skipping 530 matching lines @@
     addSource(path, content);
   }
 
   @override
   void setUp() {
     super.setUp();
     testFile = provider.convertPath('/completionTest.dart');
     contributor = createContributor();
   }
 }