Update Element/navigation/outline to use Location.

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/element.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/resource.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:path/path.dart';
 import 'package:unittest/unittest.dart';
 
 import 'mocks.dart';
 import 'analysis_abstract.dart';
@@ skipping 147 matching lines @@
       this.message, this.correction);
 
   @override
   String toString() {
     return 'AnalysisError(location=$location message=$message); '
         'errorCode=$errorCode; severity=$separator type=$type';
   }
 }
 
 
-class Location {
-  final String file;
-  final int offset;
-  final int length;
-  final int startLine;
-  final int startColumn;
-  Location(this.file, this.offset, this.length, this.startLine,
-      this.startColumn);
-
-  @override
-  String toString() {
-    return 'Location(file=$file; offset=$offset; length=$length; '
-        'startLine=$startLine; startColumn=$startColumn)';
-  }
-}
-
-
 AnalysisError jsonToAnalysisError(Map<String, Object> json) {
   Map<String, Object> jsonLocation = json[LOCATION];
   Location location = new Location(jsonLocation[FILE], _getSafeInt(jsonLocation,
       OFFSET, -1), _getSafeInt(jsonLocation, LENGTH, -1), _getSafeInt(jsonLocation,
       START_LINE, -1), _getSafeInt(jsonLocation, START_COLUMN, -1));
   return new AnalysisError(json[ERROR_CODE], json[SEVERITY], json[TYPE], location,
       json['message'], json['correction']);
 }
 
 
@@ skipping 437 matching lines @@
       };
       resourceProvider.modifyFile(pkgDependency, 'new contents');
       // Let the server time to notice the file has changed, then let
       // analysis omplete.  There should now be no error.
       return pumpEventQueue().then((_) => waitForTasksFinished()).then((_) {
         expect(filesErrors[testFile], isEmpty);
       });
     });
   }
 }