Implement SearchEngine.searchMemberDeclarations() for the new driver.

pkg/analysis_server/test/services/search/search_engine2_test.dart

 // Copyright (c) 2016, 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:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal2.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 87 matching lines @@
     ClassElement element = resultA.unit.element.types[0];
 
     var searchEngine = new SearchEngineImpl2([driver1, driver2]);
     Set<ClassElement> subtypes = await searchEngine.searchAllSubtypes(element);
     expect(subtypes, hasLength(3));
     expect(subtypes, contains(predicate((ClassElement e) => e.name == 'A')));
     expect(subtypes, contains(predicate((ClassElement e) => e.name == 'B')));
     expect(subtypes, contains(predicate((ClassElement e) => e.name == 'C')));
   }
 
+  test_searchMemberDeclarations() async {
+    var a = _p('/test/a.dart');
+    var b = _p('/test/b.dart');
+
+    var codeA = '''
+class A {
+  int test; // 1
+  int testTwo;
+}
+''';
+    var codeB = '''
+class B {
+  void test() {} // 2
+  void testTwo() {}
+}
+int test;
+''';
+
+    provider.newFile(a, codeA);
+    provider.newFile(b, codeB);
+
+    var driver1 = _newDriver();
+    var driver2 = _newDriver();
+
+    driver1.addFile(a);
+    driver2.addFile(b);
+
+    while (scheduler.isAnalyzing) {
+      await new Future.delayed(new Duration(milliseconds: 1));
+    }
+
+    var searchEngine = new SearchEngineImpl2([driver1, driver2]);
+    List<SearchMatch> matches =
+        await searchEngine.searchMemberDeclarations('test');
+    expect(matches, hasLength(2));
+
+    void assertHasElement(String name, int nameOffset) {
+      expect(
+          matches,
+          contains(predicate((SearchMatch m) =>
+              m.kind == MatchKind.DECLARATION &&
+              m.element.name == name &&
+              m.element.nameOffset == nameOffset)));
+    }
+
+    assertHasElement('test', codeA.indexOf('test; // 1'));
+    assertHasElement('test', codeB.indexOf('test() {} // 2'));
+  }
+
   test_searchReferences() async {
     var a = _p('/test/a.dart');
     var b = _p('/test/b.dart');
 
     provider.newFile(
         a,
         '''
 class T {}
 T a;
 ''');
@@ skipping 74 matching lines @@
       byteStore,
       contentOverlay,
       new SourceFactory(
           [new DartUriResolver(sdk), new ResourceUriResolver(provider)],
           null,
           provider),
       new AnalysisOptionsImpl()..strongMode = true);
 
   String _p(String path) => provider.convertPath(path);
 }