extract InheritedReferenceContributor from imported reference contributor

pkg/analysis_server/test/domain_completion_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.completion;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 586 matching lines @@
   test_inDartDoc_reference3() async {
     addTestFile('''
   /// The [m^]
   main(aaa, bbb) {}
   ''');
     await getSuggestions();
     assertHasResult(CompletionSuggestionKind.INVOCATION, 'main',
         relevance: DART_RELEVANCE_LOCAL_FUNCTION);
   }
 
+  test_inherited() {
+    addFile('/libA.dart', 'class A {m() {}}');
+    addTestFile('''
+import '/libA.dart';
+class B extends A {
+  x() {^}
+}
+''');
+    return getSuggestions().then((_) {
+      expect(replacementOffset, equals(completionOffset));
+      expect(replacementLength, equals(0));
+      assertHasResult(CompletionSuggestionKind.INVOCATION, 'm');
+    });
+  }
+
   test_keyword() {
     addTestFile('library A; cl^');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset - 2));
       expect(replacementLength, equals(2));
       assertHasResult(CompletionSuggestionKind.KEYWORD, 'export',
           relevance: DART_RELEVANCE_HIGH);
       assertHasResult(CompletionSuggestionKind.KEYWORD, 'class',
           relevance: DART_RELEVANCE_HIGH);
     });
   }
 
   test_local_named_constructor() {
     addTestFile('class A {A.c(); x() {new A.^}}');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'c');
       assertNoResult('A');
     });
   }
 
+  test_local_override() {
+    addFile('/libA.dart', 'class A {m() {}}');
+    addTestFile('''
+import '/libA.dart';
+class B extends A {
+  m() {}
+  x() {^}
+}
+''');
+    return getSuggestions().then((_) {
+      expect(replacementOffset, equals(completionOffset));
+      expect(replacementLength, equals(0));
+      assertHasResult(CompletionSuggestionKind.INVOCATION, 'm');
+    });
+  }
+
   test_locals() {
     addTestFile('class A {var a; x() {var b;^}} class DateTime { }');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'A');
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'a',
           relevance: DART_RELEVANCE_LOCAL_FIELD);
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'b',
           relevance: DART_RELEVANCE_LOCAL_VARIABLE);
@@ skipping 15 matching lines @@
 
   test_overrides() {
     addFile('/libA.dart', 'class A {m() {}}');
     addTestFile('''
 import '/libA.dart';
 class B extends A {m() {^}}
 ''');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
-      assertHasResult(CompletionSuggestionKind.INVOCATION, 'm',
-          relevance: DART_RELEVANCE_LOCAL_METHOD);
+      assertHasResult(CompletionSuggestionKind.INVOCATION, 'm');
     });
   }
 
   test_partFile() {
     addFile(
         '/project/bin/testA.dart',
         '''
       library libA;
       part "$testFile";
       import 'dart:html';
@@ skipping 273 matching lines @@
 }
     ''');
     await waitForTasksFinished();
     Request request =
         new CompletionGetSuggestionsParams(testFile, 0).toRequest('0');
     Response response = handler.handleRequest(request);
     expect(response.error, isNotNull);
     expect(response.error.code, RequestErrorCode.NO_INDEX_GENERATED);
   }
 }