extract LibraryMemberContributor from prefixed element 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 452 matching lines @@
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'Object');
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'foo');
       assertNoResult('HtmlElement');
       assertNoResult('test');
     });
   }
 
+  test_imports_prefixed2() {
+    addTestFile('''
+      import 'dart:html' as foo;
+      main() {foo.^}
+    ''');
+    return getSuggestions().then((_) {
+      expect(replacementOffset, equals(completionOffset));
+      expect(replacementLength, equals(0));
+      assertHasResult(CompletionSuggestionKind.INVOCATION, 'HtmlElement');
+      assertNoResult('test');
+    });
+  }
+
   test_invocation() {
     addTestFile('class A {b() {}} main() {A a; a.^}');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'b');
     });
   }
 
   test_invocation_sdk_relevancy_off() {
@@ skipping 142 matching lines @@
     ''');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'Object');
       assertNoResult('HtmlElement');
       assertNoResult('test');
     });
   }
 
+  test_static() {
+    addTestFile('class A {static b() {} c() {}} main() {A.^}');
+    return getSuggestions().then((_) {
+      expect(replacementOffset, equals(completionOffset));
+      expect(replacementLength, equals(0));
+      assertHasResult(CompletionSuggestionKind.INVOCATION, 'b');
+      assertNoResult('c');
+    });
+  }
+
   test_topLevel() {
     addTestFile('''
       typedef foo();
       var test = '';
       main() {tes^t}
     ''');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset - 3));
       expect(replacementLength, equals(4));
       // Suggestions based upon imported elements are partially filtered
@@ skipping 201 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);
   }
 }